don't spam about unwritable cvars when you're trying to reset all cvars. its a bit pointless.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4368 fc73d0e0-1445-4013-8a0c-d673dee63da5

engine/common/cvar.c

@@ -519,6 +519,8 @@ void Cvar_Reset_f (void)
 				}
 			}
 
+			if ((cmd->flags & CVAR_NOSET) && !strcmp(search, "*"))
+				continue;
 			// reset cvar to default
 			Cvar_Set(cmd, cmd->defaultstr);
 		}