Free PQresult on error in pg_receivexlog.

The leak is fairly small and rare, but a leak nevertheless.

Per Coverity report. Backpatch to 9.2, where pg_receivexlog was added.
pg_basebackup shares the code, but it always exits on error, so there is
no real leak.

diff --git a/src/bin/pg_basebackup/receivelog.c b/src/bin/pg_basebackup/receivelog.c
index a7a79e824a3912d60b07b2840c17288e1b2afc66..3a46767417eea2bc214396fab1b4da67e4c49b06 100644 (file)
--- a/src/bin/pg_basebackup/receivelog.c
+++ b/src/bin/pg_basebackup/receivelog.c
@@ -612,6 +612,7 @@ ReceiveXlogStream(PGconn *conn, XLogRecPtr startpos, uint32 timeline,
                fprintf(stderr,
                                _("%s: unexpected termination of replication stream: %s"),
                                progname, PQresultErrorMessage(res));
+               PQclear(res);
                goto error;
        }
        PQclear(res);