From 67c6bd1ca3ce75778138bf4713444a5a6b46032e Mon Sep 17 00:00:00 2001
From: Simon Riggs <simon@2ndQuadrant.com>
Date: Thu, 8 Sep 2016 10:32:58 +0100
Subject: [PATCH] Fix minor memory leak in Standby startup

StandbyRecoverPreparedTransactions() leaked the buffer
used for two phase state file. This was leaked once
at startup and at every shutdown checkpoint seen.

Backpatch to 9.6

Stas Kelvich
---
 src/backend/access/transam/twophase.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backend/access/transam/twophase.c b/src/backend/access/transam/twophase.c
index 9f55adcaf5..1323fb508d 100644
--- a/src/backend/access/transam/twophase.c
+++ b/src/backend/access/transam/twophase.c
@@ -1886,6 +1886,8 @@ StandbyRecoverPreparedTransactions(bool overwriteOK)
 				Assert(TransactionIdFollows(subxid, xid));
 				SubTransSetParent(xid, subxid, overwriteOK);
 			}
+
+			pfree(buf);
 		}
 	}
 	FreeDir(cldir);
-- 
2.30.2