Bug #17297012 MEMORY LEAK IN MYSQL_OPTIONS WHILE CALLING WITH OPTION MYSQL_SET_CLIENT_IP

Memory Leak in mysql_options() was caused by missing call
to my_free() in MYSQL_SET_CLIENT_IP branch. Fixed by adding
my_free() to cleanup mysql->options.client_ip value before
assigning new value.

sql-common/client.c

 /*
-   Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+   Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -3167,6 +3167,7 @@ mysql_options(MYSQL *mysql,enum mysql_option option, const void *arg)
     mysql->options.methods_to_use= option;
     break;
   case MYSQL_SET_CLIENT_IP:
+    my_free(mysql->options.client_ip,MYF(MY_ALLOW_ZERO_PTR));
     mysql->options.client_ip= my_strdup(arg, MYF(MY_WME));
     break;
   case MYSQL_SECURE_AUTH: