When timeout reaches 0 the postfix decrement still subtracts, so the test
fails.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: NRoel Kluin <12o3l@tiscali.nl>
Acked-by: NPeter Korsgaard <jacmet@sunsite.dk>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>