Fix minor memory leak in pg_dump

A query used to read default ACL information from the catalogs did not
free a set of PQExpBuffer.

Oversight in commit e2090d9, so backpatch down to 9.6.

Author: Jie Zhang
Reviewed-by: Sawada Masahiko
Discussion: https://postgr.es/m/05bcbc5857f948efa0b451b85a48ae10@G08CNEXMBPEKD06.g08.fujitsu.local
Backpatch-through: 9.6

diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index c579227b1974899d029753bb92560da86cdc039c..5db4f5761d7abaef7f8074d875764acbab21a44b 100644 (file)
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -9592,6 +9592,11 @@ getDefaultACLs(Archive *fout, int *numDefaultACLs)
                          racl_subquery->data,
                          initacl_subquery->data,
                          initracl_subquery->data);
+
+       destroyPQExpBuffer(acl_subquery);
+       destroyPQExpBuffer(racl_subquery);
+       destroyPQExpBuffer(initacl_subquery);
+       destroyPQExpBuffer(initracl_subquery);
    }
    else
    {