DozerAIUpdate: Add null check for controlling player before accessing player index

Author: seer-by-sentry[bot]

Generals/Code/GameEngine/Source/GameLogic/Object/Update/AIUpdate/DozerAIUpdate.cpp

@@ -1074,7 +1074,12 @@ StateReturnType DozerPrimaryIdleState::update( void )
 	//
 	if( ai->isIdle() && !m_isMarkedAsIdle && !dozer->isEffectivelyDead())
 	{
-		m_idlePlayerNumber = dozer->getControllingPlayer()->getPlayerIndex();
+		Player *controllingPlayer = dozer->getControllingPlayer();
+		if( !controllingPlayer )
+		{
+			return STATE_FAILURE;
+		}
+		m_idlePlayerNumber = controllingPlayer->getPlayerIndex();
 		TheInGameUI->addIdleWorker(getMachineOwner());
 		m_isMarkedAsIdle = TRUE;
 		getMachineOwner()->setWeaponSetFlag(WEAPONSET_MINE_CLEARING_DETAIL);//maybe go clear some mines, if I feel like it

GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Update/AIUpdate/DozerAIUpdate.cpp

@@ -1079,7 +1079,12 @@ StateReturnType DozerPrimaryIdleState::update( void )
 	//
 	if( ai->isIdle() && !m_isMarkedAsIdle && !dozer->isEffectivelyDead())
 	{
-		m_idlePlayerNumber = dozer->getControllingPlayer()->getPlayerIndex();
+		Player *controllingPlayer = dozer->getControllingPlayer();
+		if( !controllingPlayer )
+		{
+			return STATE_FAILURE;
+		}
+		m_idlePlayerNumber = controllingPlayer->getPlayerIndex();
 		TheInGameUI->addIdleWorker(getMachineOwner());
 		m_isMarkedAsIdle = TRUE;
 		getMachineOwner()->setWeaponSetFlag(WEAPONSET_MINE_CLEARING_DETAIL);//maybe go clear some mines, if I feel like it