Off by one in floppy.c

Another coverity patch i forgot to resend, original thread here
http://marc.info/?l=linux-kernel&m=115144559823592&w=2

In case drive == N_DRIVE, we get one past the drive_params array.
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/block/floppy.c

@@ -670,7 +670,7 @@ static void __reschedule_timeout(int drive, const char *message, int marg)
 	if (drive == current_reqD)
 		drive = current_drive;
 	del_timer(&fd_timeout);
-	if (drive < 0 || drive > N_DRIVE) {
+	if (drive < 0 || drive >= N_DRIVE) {
 		fd_timeout.expires = jiffies + 20UL * HZ;
 		drive = 0;
 	} else