Ensure that ghost stacks are created only by BattleStacksRemoved packet.

This will allow client to receive notification.

server/CGameHandler.cpp

@@ -5606,6 +5606,20 @@ void CGameHandler::runBattle()
 
 		const BattleInfo & curB = *gs->curB;
 
+		std::set <const CStack *> stacksToRemove;
+		for(auto stack : curB.stacks)
+		{
+			if(vstd::contains(stack->state, EBattleStackState::GHOST_PENDING))
+				stacksToRemove.insert(stack);
+		}
+
+		for(auto stack : stacksToRemove)
+		{
+			BattleStacksRemoved bsr;
+			bsr.stackIDs.insert(stack->ID);
+			sendAndApply(&bsr);
+		}
+
 		//stack loop
 
 		const CStack *next;