bugfix(script): Fix crash if nearest command button target is not found (#1420)

Author: Stubbjax

GeneralsMD/Code/GameEngine/Source/GameLogic/Object/Object.cpp

@@ -5534,13 +5534,23 @@ void Object::doCommandButtonAtObject( const CommandButton *commandButton, Object
 		switch( commandButton->getCommandType() )
 		{
 			case GUI_COMMAND_COMBATDROP:
+#if RETAIL_COMPATIBLE_CRC
+				if (!obj)
+					return;
+#endif
+
 				if( ai )
 				{
 					ai->aiCombatDrop( obj, *(obj->getPosition()), cmdSource );
 				}
 				return;
 			case GUI_COMMAND_SPECIAL_POWER:
 			{
+#if RETAIL_COMPATIBLE_CRC
+				if (!obj)
+					return;
+#endif
+				
 				if( commandButton->getSpecialPowerTemplate() )
 				{
 					CommandOption commandOptions = (CommandOption)(commandButton->getOptions() | COMMAND_FIRED_BY_SCRIPT);

GeneralsMD/Code/GameEngine/Source/GameLogic/ScriptEngine/ScriptActions.cpp

@@ -5888,10 +5888,10 @@ void ScriptActions::doTeamUseCommandButtonOnNearestObjectType( const AsciiString
 		theGroup->getCenter(&pos);
 
 		bestObj = ThePartitionManager->getClosestObject(&pos, REALLY_FAR, FROM_CENTER_2D, filters);
-		if( !bestObj )
-		{
+#if RETAIL_COMPATIBLE_CRC
+		if (!bestObj)
 			return;
-		}
+#endif
 	}
 	else
 	{
@@ -5930,6 +5930,11 @@ void ScriptActions::doTeamUseCommandButtonOnNearestObjectType( const AsciiString
 		}
 	}
 
+#if !RETAIL_COMPATIBLE_CRC
+	if (!bestObj)
+		return;
+#endif
+
 	// already been checked for validity
 	theGroup->groupDoCommandButtonAtObject(commandButton, bestObj, CMD_FROM_SCRIPT);
 }