Fix missing PQclear() in libpqrcv_endstreaming().

This omission leaked one PGresult per WAL streaming cycle, which possibly
would never be enough to notice in the real world, but it's still a leak.

Per Coverity.  Back-patch to 9.3 where the error was introduced.

diff --git a/src/backend/replication/libpqwalreceiver/libpqwalreceiver.c b/src/backend/replication/libpqwalreceiver/libpqwalreceiver.c
index ddcf6b294032b41271102ed112fd78169b418783..19dc9efedd46d55bc5888e59c948fa7a30d8f034 100644 (file)
--- a/src/backend/replication/libpqwalreceiver/libpqwalreceiver.c
+++ b/src/backend/replication/libpqwalreceiver/libpqwalreceiver.c
@@ -262,6 +262,7 @@ libpqrcv_endstreaming(TimeLineID *next_tli)
        ereport(ERROR,
                (errmsg("error reading result of streaming command: %s",
                        PQerrorMessage(streamConn))));
+   PQclear(res);
 
    /* Verify that there are no more results */
    res = PQgetResult(streamConn);