From 289af2579b5084d554b71a9307ec705afbba8ae7 Mon Sep 17 00:00:00 2001
From: Ramil Kalimullin <ramil@mysql.com>
Date: Fri, 23 Dec 2011 18:52:44 +0400
Subject: [PATCH] Fix for bug#11758931 - 51196: SLAVE SQL: GOT AN ERROR WRITING
 COMMUNICATION PACKETS, ERROR_CODE: 1160

Addendum: for some queries table->in_use might be NULL -
check it.
---
 storage/federated/ha_federated.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/storage/federated/ha_federated.cc b/storage/federated/ha_federated.cc
index 64d5af446d8..f53066a4b22 100644
--- a/storage/federated/ha_federated.cc
+++ b/storage/federated/ha_federated.cc
@@ -1658,7 +1658,8 @@ int ha_federated::close(void)
     if the original query was not issued against the FEDERATED table.
     So, don't propagate errors from mysql_close().
   */
-  table->in_use->clear_error();
+  if (table->in_use)
+    table->in_use->clear_error();
 
   DBUG_RETURN(free_share(share));
 }