fixed broken test

test/game/CGameStateTest.cpp

@@ -211,9 +211,9 @@ TEST_F(CGameStateTest, issue2765)
 
 	for(const CStack * s : gameState->curB->stacks)
 	{
-		if(s->type->idNumber == CreatureID::BALLISTA)
+		if(s->type->idNumber == CreatureID::BALLISTA && s->unitSide() == BattleSide::DEFENDER)
 			def = s;
-		else if(s->type->idNumber == CreatureID(69))
+		else if(s->type->idNumber == CreatureID(69) && s->unitSide() == BattleSide::ATTACKER)
 			att = s;
 	}
 	ASSERT_NE(att, nullptr);