fix checks in *_num() functions: only when/where necessary

server/drivers/hd44780.c

@@ -938,7 +938,7 @@ HD44780_num (Driver *drvthis, int x, int num)
 	if ((num < 0) || (num > 10))
 		return;
 
-	if ((p->width >= 20) && (p->height >= 4)) {
+	if (p->height >= 4) {
 		int y = (p->height - 2) / 2;
 		int x2, y2;