hisax: timeout off by one in waitrecmsg()

With `while (timeout++ < maxdelay)' timeout reaches maxdelay + 1 after the
loop This is probably unlikely a problem in practice.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/hisax/isar.c

@@ -138,7 +138,7 @@ waitrecmsg(struct IsdnCardState *cs, u_char *len,
 	while((!(cs->BC_Read_Reg(cs, 0, ISAR_IRQBIT) & ISAR_IRQSTA)) &&
 		(timeout++ < maxdelay))
 		udelay(1);
-	if (timeout >= maxdelay) {
+	if (timeout > maxdelay) {
 		printk(KERN_WARNING"isar recmsg IRQSTA timeout\n");
 		return(0);
 	}