[SCSI] Overrun in drivers/scsi/sim710.c

This fixes coverity bug id #480.  Since id_array is declared as
id_array[MAX_SLOTS], the check for i>MAX_SLOTS is obviously false.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>