refs codership/mysql-wsrep#55 - To avoid compiler warming:

sql/sql_parse.cc: In function 'bool do_command(THD*)':

sql/sql_parse.cc:758:20: error: 'packet_length' may be used uninitialized in this function [-Werror=maybe-uninitialized]

   if ((WSREP(thd)  && packet_length == packet_error) ||
[

sql/sql_parse.cc

@@ -693,7 +693,11 @@ bool do_command(THD *thd)
 {
   bool return_value;
   char *packet= 0;
+#ifdef WITH_WSREP
+  ulong packet_length= 0; // just to avoid (false positive) compiler warning
+#else
   ulong packet_length;
+#endif /* WITH_WSREP */
   NET *net= &thd->net;
   enum enum_server_command command;
   DBUG_ENTER("do_command");