Fix issues reported by Sentry (#3143)

This should fix a few issues reported by Sentry

3 files changed, 13 insertions, 10 deletions

diff --git a/go.mod b/go.mod
index f36d68a2..c954678e 100644
--- a/go.mod
+++ b/go.mod
@@ -22,7 +22,7 @@ require (
 	github.com/matrix-org/dugong v0.0.0-20210921133753-66e6b1c67e2e
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91
 	github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20230707180038-35f734f7406a
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20230707183936-226d2080393a
 	github.com/matrix-org/pinecone v0.11.1-0.20230210171230-8c3b24f2649a
 	github.com/matrix-org/util v0.0.0-20221111132719-399730281e66
 	github.com/mattn/go-sqlite3 v1.14.17
diff --git a/go.sum b/go.sum
index c499c5e3..4ea62726 100644
--- a/go.sum
+++ b/go.sum
@@ -113,7 +113,6 @@ github.com/glycerine/go-unsnap-stream v0.0.0-20180323001048-9f0cb55181dd/go.mod
 github.com/glycerine/goconvey v0.0.0-20180728074245-46e3a41ad493/go.mod h1:Ogl1Tioa0aV7gstGFO7KhffUsb9M4ydbEbbxpcEDc24=
 github.com/go-errors/errors v1.4.2 h1:J6MZopCL4uSllY1OfXM374weqZFFItUbrImctkmUxIA=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
-github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
 github.com/go-playground/locales v0.14.0 h1:u50s323jtVGugKlcYeyzC0etD1HifMjqmJqb8WugfUU=
@@ -176,14 +175,12 @@ github.com/h2non/filetype v1.1.3/go.mod h1:319b3zT68BvV+WRj7cwy856M2ehB3HqNOt6sy
 github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 h1:2VTzZjLZBgl62/EtslCrtky5vbi9dd7HrQPQIx6wqiw=
 github.com/huandu/xstrings v1.0.0 h1:pO2K/gKgKaat5LdpAhxhluX2GPQMaI3W5FUz/I/UnWk=
 github.com/huandu/xstrings v1.0.0/go.mod h1:4qWG/gcEcfX4z/mBDHJ++3ReCw9ibxbsNJbcucJdbSo=
-github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
 github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/juju/errors v1.0.0 h1:yiq7kjCLll1BiaRuNY53MGI0+EQ3rF6GB+wvboZDefM=
 github.com/juju/errors v1.0.0/go.mod h1:B5x9thDqx0wIMH3+aLIMP9HjItInYWObRovoCFM5Qe8=
-github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
 github.com/jung-kurt/gofpdf v1.0.3-0.20190309125859-24315acbbda5/go.mod h1:7Id9E/uU8ce6rXgefFLlgrJj/GYY22cpxn+r32jIOes=
 github.com/kardianos/minwinsvc v1.0.2 h1:JmZKFJQrmTGa/WiW+vkJXKmfzdjabuEW4Tirj5lLdR0=
 github.com/kardianos/minwinsvc v1.0.2/go.mod h1:LUZNYhNmxujx2tR7FbdxqYJ9XDDoCd3MQcl1o//FWl4=
@@ -210,8 +207,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91 h1:s7fexw
 github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91/go.mod h1:e+cg2q7C7yE5QnAXgzo512tgFh1RbQLC0+jozuegKgo=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530 h1:kHKxCOLcHH8r4Fzarl4+Y3K5hjothkVW5z7T1dUM11U=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230707180038-35f734f7406a h1:PuCOJWHjCEvh4c5UZj2+s3wOWGPL3OJGDrrbEm1UcfU=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230707180038-35f734f7406a/go.mod h1:H9V9N3Uqn1bBJqYJNGK1noqtgJTaCEhtTdcH/mp50uU=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20230707183936-226d2080393a h1:jDoCCEUPnAyPOXO76V4lS1H92gfOO1orMy805gf25bg=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20230707183936-226d2080393a/go.mod h1:H9V9N3Uqn1bBJqYJNGK1noqtgJTaCEhtTdcH/mp50uU=
 github.com/matrix-org/pinecone v0.11.1-0.20230210171230-8c3b24f2649a h1:awrPDf9LEFySxTLKYBMCiObelNx/cBuv/wzllvCCH3A=
 github.com/matrix-org/pinecone v0.11.1-0.20230210171230-8c3b24f2649a/go.mod h1:HchJX9oKMXaT2xYFs0Ha/6Zs06mxLU8k6F1ODnrGkeQ=
 github.com/matrix-org/util v0.0.0-20221111132719-399730281e66 h1:6z4KxomXSIGWqhHcfzExgkH3Z3UkIXry4ibJS4Aqz2Y=
@@ -244,7 +241,6 @@ github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7P
 github.com/mschoch/smat v0.0.0-20160514031455-90eadee771ae/go.mod h1:qAyveg+e4CE+eKJXWVjKXM4ck2QobLqTDytGJbLLhJg=
 github.com/mschoch/smat v0.2.0 h1:8imxQsjDm8yFEAVBe7azKmKSgzSkZXDuKkSq9374khM=
 github.com/mschoch/smat v0.2.0/go.mod h1:kc9mz7DoBKqDyiRL7VZN8KvXQMWeTaVnttLRXOlotKw=
-github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/nats-io/jwt/v2 v2.4.1 h1:Y35W1dgbbz2SQUYDPCaclXcuqleVmpbRa7646Jf2EX4=
 github.com/nats-io/jwt/v2 v2.4.1/go.mod h1:24BeQtRwxRV8ruvC4CojXlx/WQ/VjuwlYiH+vu/+ibI=
 github.com/nats-io/nats-server/v2 v2.9.15 h1:MuwEJheIwpvFgqvbs20W8Ish2azcygjf4Z0liVu2I4c=
diff --git a/syncapi/streams/stream_pdu.go b/syncapi/streams/stream_pdu.go
index 1a4e5351..3f688880 100644
--- a/syncapi/streams/stream_pdu.go
+++ b/syncapi/streams/stream_pdu.go
@@ -371,19 +371,26 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 		gomatrixserverlib.TopologicalOrderByAuthEvents,
 	)
 	delta.StateEvents = make([]*rstypes.HeaderedEvent, len(sEvents))
+	var skipped int
 	for i := range sEvents {
 		ev := sEvents[i]
-		delta.StateEvents[i] = ev.(*rstypes.HeaderedEvent)
+		he, ok := ev.(*rstypes.HeaderedEvent)
+		if !ok {
+			skipped++
+			continue
+		}
+		delta.StateEvents[i-skipped] = he
 		// update the powerlevel event for state events
 		if ev.Version() == gomatrixserverlib.RoomVersionPseudoIDs && ev.Type() == spec.MRoomPowerLevels && ev.StateKeyEquals("") {
 			var newEvent gomatrixserverlib.PDU
-			newEvent, err = p.updatePowerLevelEvent(ctx, ev.(*rstypes.HeaderedEvent))
+			newEvent, err = p.updatePowerLevelEvent(ctx, he)
 			if err != nil {
 				return r.From, err
 			}
-			delta.StateEvents[i] = &rstypes.HeaderedEvent{PDU: newEvent}
+			delta.StateEvents[i-skipped] = &rstypes.HeaderedEvent{PDU: newEvent}
 		}
 	}
+	delta.StateEvents = delta.StateEvents[:len(sEvents)-skipped]
 
 	if len(delta.StateEvents) > 0 {
 		if last := delta.StateEvents[len(delta.StateEvents)-1]; last != nil {