MW-267

Fix Galera crash at startup when compiled with gcc 6
Signed-off-by: Sachin Setiya <sachin.setiya@mariadb.com>

sql/wsrep_mysqld.cc

@@ -83,7 +83,7 @@ my_bool wsrep_creating_startup_threads = 0;
  */
 my_bool wsrep_inited                   = 0; // initialized ?
 
-static const wsrep_uuid_t cluster_uuid = WSREP_UUID_UNDEFINED;
+static wsrep_uuid_t cluster_uuid = WSREP_UUID_UNDEFINED;
 const wsrep_uuid_t* wsrep_cluster_uuid()
 {
   return &cluster_uuid;

sql/wsrep_mysqld.h

@@ -314,7 +314,6 @@ int wsrep_create_trigger_query(THD *thd, uchar** buf, size_t* buf_len);
 int wsrep_create_event_query(THD *thd, uchar** buf, size_t* buf_len);
 int wsrep_alter_event_query(THD *thd, uchar** buf, size_t* buf_len);
 
-const wsrep_uuid_t* wsrep_cluster_uuid();
 struct xid_t;
 void wsrep_set_SE_checkpoint(xid_t*);
 void wsrep_get_SE_checkpoint(wsrep_uuid_t&, wsrep_seqno_t&);