--- src/backend/storage/ipc/standby.c.org	2013-06-04 14:10:24.000000000 +0900
+++ src/backend/storage/ipc/standby.c.new	2013-06-04 14:48:45.000000000 +0900
@@ -886,6 +886,9 @@
 	if (nlocks > 0)
 		LogAccessExclusiveLocks(nlocks, locks);
 
+	pfree(locks);
+
+
 	/*
 	 * Log details of all in-progress transactions. This should be the last
 	 * record we write, because standby will open up when it sees this.