bad blind change fixed

sql/ha_blackhole.cc

@@ -160,6 +160,7 @@ int ha_blackhole::external_lock(THD *thd, int lock_type)
 
 uint ha_blackhole::lock_count(void) const
 {
+  DBUG_ENTER("ha_blackhole::lock_count");
   DBUG_RETURN(0);
 }
 
@@ -167,7 +168,8 @@ THR_LOCK_DATA **ha_blackhole::store_lock(THD *thd,
                                          THR_LOCK_DATA **to,
                                          enum thr_lock_type lock_type)
 {
-  DEBUG_RETURN(to);
+  DBUG_ENTER("ha_blackhole::store_lock");
+  DBUG_RETURN(to);
 }