Core/Battlefield: attempt to fix crashes. please test and confirm

src/server/game/Battlefield/Zones/BattlefieldWG.cpp

@@ -321,7 +321,7 @@ void BattlefieldWG::UpdateCounterVehicle(bool init)
 void BattlefieldWG::OnBattleEnd(bool endbytimer)
 {
     // Remove relic
-    if (m_relic)
+    if (m_relic && m_relic->isSpawned())
         m_relic->RemoveFromWorld();
     m_relic = NULL;
 

src/server/game/Battlefield/Zones/BattlefieldWG.h

@@ -1607,7 +1607,7 @@ struct WGWorkshop
 
     WGWorkshop(BattlefieldWG* _bf, uint8 _workshopId)
     {
-        ASSERT(bf);
+        ASSERT(_bf);
         ASSERT(_workshopId < WG_MAX_WORKSHOP);
 
         bf = _bf;