Turn on strict checking.
Simplify code by using "unless" statement.
Signed-off-by: NStephen Hemminger <shemminger@vyatta.com>
Acked-by: NWANG Cong <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NMichal Marek <mmarek@suse.cz>