Fix memory leak.

Fix resource leak in pool_push_pending_data pointed out by Coverity.

Backpatch-through: v4.2

diff --git a/src/protocol/pool_process_query.c b/src/protocol/pool_process_query.c
index 15b0f41f0e42a7a1446c814149951b7865170b4f..0059c88fe5cecfd92b54f87eacc40528f2894511 100644 (file)
--- a/src/protocol/pool_process_query.c
+++ b/src/protocol/pool_process_query.c
@@ -5261,6 +5261,7 @@ pool_push_pending_data(POOL_CONNECTION * backend)
                {
                        pool_push(backend, buf, len);
                        pfree(buf);
+                       buf = NULL;
                }
                data_pushed = true;
                if (kind == 'E')
@@ -5269,6 +5270,8 @@ pool_push_pending_data(POOL_CONNECTION * backend)
                        ereport(DEBUG1,
                                        (errmsg("pool_push_pending_data: ERROR response found")));
                        pool_set_ignore_till_sync();
+                       if (buf)
+                               pfree(buf);
                        break;
                }
                num_pushed_messages++;