Merge branch 'tiny-joystick-fix' into 'master'

Tiny fix so that joystick2 being closed can let the JoystickSubSystem close before game close.

See merge request STJr/SRB2!292

src/sdl/i_system.c

@@ -1154,6 +1154,7 @@ static void I_ShutdownJoystick2(void)
 		D_PostEvent(&event);
 	}
 
+	joystick2_started = 0;
 	JoyReset(&JoyInfo2);
 	if (!joystick_started && !joystick2_started && SDL_WasInit(SDL_INIT_JOYSTICK) == SDL_INIT_JOYSTICK)
 	{