docs: Add disguise condition description

Author: Stubbjax

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

@@ -1558,6 +1558,9 @@ Bool Object::isLogicallyVisible() const
 
 	const Object* obj = getOuterObject();
 
+	// Disguisers are always visible to all players, irrespective of any stealth
+	// status. We thus need to check the type rather than the status as the
+	// disguise status is absent during the disguise transition phase.
 	if (obj->isKindOf(KINDOF_DISGUISER))
 		return true;
 

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

@@ -1713,6 +1713,9 @@ Bool Object::isLogicallyVisible() const
 
 	const Object* obj = getOuterObject();
 
+	// Disguisers are always visible to all players, irrespective of any stealth
+	// status. We thus need to check the type rather than the status as the
+	// disguise status is absent during the disguise transition phase.
 	if (obj->isKindOf(KINDOF_DISGUISER))
 		return true;