Make fov cvar persistent

Author: Diordany

Quake/gl_screen.c

@@ -90,7 +90,7 @@ cvar_t		scr_clock = {"scr_clock", "0", CVAR_NONE};
 cvar_t		scr_usekfont = {"scr_usekfont", "0", CVAR_NONE}; // 2021 re-release
 
 cvar_t		scr_viewsize = {"viewsize","100", CVAR_ARCHIVE};
-cvar_t		scr_fov = {"fov","90",CVAR_NONE};	// 10 - 170
+cvar_t		scr_fov = {"fov","90",CVAR_ARCHIVE};	// 10 - 170
 cvar_t		scr_fov_adapt = {"fov_adapt","1",CVAR_ARCHIVE};
 cvar_t		scr_conspeed = {"scr_conspeed","500",CVAR_ARCHIVE};
 cvar_t		scr_centertime = {"scr_centertime","2",CVAR_NONE};