Scripts/Pet: Fix non pch compile

src/server/scripts/Pet/pet_dk.cpp

@@ -23,7 +23,10 @@
 #include "ScriptMgr.h"
 #include "ScriptedCreature.h"
 #include "CombatAI.h"
+#include "Cell.h"
+#include "CellImpl.h"
 #include "GridNotifiers.h"
+#include "GridNotifiersImpl.h"
 
 enum DeathKnightSpells
 {