Script/Commands: correction of https://github.com/azerothcore/azerothcore-wotlk/commit/1b1767e9f4c20d1e20541968de98d00814f63247#diff-de077c84577b8885f0df1d20707bbb38L243

src/scripts/Commands/cs_gobject.cpp

@@ -236,7 +236,7 @@ public:
         else
         {
             std::ostringstream eventFilter;
-            eventFilter << " AND (eventEntry IS nullptr ";
+            eventFilter << " AND (eventEntry IS NULL ";
             bool initString = true;
 
             for (GameEventMgr::ActiveEvents::const_iterator itr = activeEventsList.begin(); itr != activeEventsList.end(); ++itr)