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

server/drivers/CFontzPacket.c

@@ -1241,7 +1241,7 @@ char bignum_map[11][4][3] = {
 	if ((num < 0) || (num > 10))
 		return;
 
-	if ((p->width >= 20) && (p->height >= 4)) {
+	if (p->height >= 4) {
 		int y = (p->height - 2) / 2;	/* center vertically */
 		int x2, y2;