net: limit BIP37 filter lifespan (active between 'filterload' and 'filterclear')

Previously, a default match-everything bloom filter was set for every peer,
i.e. even before receiving a 'filterload' message and after receiving a
'filterclear' message code branches checking for the existence of the filter
by testing the pointer "pfilter" were _always_ executed.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index f63d048aac..57edf9e2a9 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -3198,7 +3198,7 @@ bool ProcessMessage(CNode* pfrom, const std::string& msg_type, CDataStream& vRec
         }
         LOCK(pfrom->m_tx_relay->cs_filter);
         if (pfrom->GetLocalServices() & NODE_BLOOM) {
-            pfrom->m_tx_relay->pfilter.reset(new CBloomFilter());
+            pfrom->m_tx_relay->pfilter = nullptr;
         }
         pfrom->m_tx_relay->fRelayTxes = true;
         return true;