- server CVARs can be changed only by settings controller

Initially, settings controller flag was false by default
It was not touched during construction and destruction of player_t instances though
Now, with all members initialized in class definition, this flag must be saved and restored manually

https://forum.zdoom.org/viewtopic.php?t=62830

src/d_player.h

@@ -453,7 +453,7 @@ public:
 	TObjPtr<AActor*> MUSINFOactor = nullptr;		// For MUSINFO purposes
 	int8_t		MUSINFOtics = 0;
 
-	bool		settings_controller = true;	// Player can control game settings.
+	bool		settings_controller = false;	// Player can control game settings.
 	int8_t		crouching = 0;
 	int8_t		crouchdir = 0;