error: Use error_reportf_err() where it makes obvious sense

Done with this Coccinelle semantic patch

    @@
    expression FMT, E, S;
    expression list ARGS;
    @@
    -    error_report(FMT, ARGS, error_get_pretty(E));
    +    error_reportf_err(E, FMT/*@@@*/, ARGS);
    (
    -    error_free(E);
    |
	 exit(S);
    |
	 abort();
    )

followed by a replace of '%s"/*@@@*/' by '"' and some line rewrapping,
because I can't figure out how to make Coccinelle transform strings.

We now use the error whole instead of just its message obtained with
error_get_pretty().  This avoids suppressing its hint (see commit
50b7b00), but I can't see how the errors touched in this commit could
come with hints.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1450452927-8346-12-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

1 files changed, 5 insertions, 7 deletions

diff --git a/blockdev.c b/blockdev.c
index 2df0c6d366..1392fffaaa 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1582,13 +1582,11 @@ static void internal_snapshot_abort(BlkActionState *common)
     }
 
     if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) {
-        error_report("Failed to delete snapshot with id '%s' and name '%s' on "
-                     "device '%s' in abort: %s",
-                     sn->id_str,
-                     sn->name,
-                     bdrv_get_device_name(bs),
-                     error_get_pretty(local_error));
-        error_free(local_error);
+        error_reportf_err(local_error,
+                          "Failed to delete snapshot with id '%s' and "
+                          "name '%s' on device '%s' in abort: ",
+                          sn->id_str, sn->name,
+                          bdrv_get_device_name(bs));
     }
 }