md: Simplify sb_equal().

The only caller of sb_equal() tests the return value against
zero, so it's OK to return the negated return value of memcmp().

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: Neil Brown <neilb@suse.de>
This commit is contained in:
Andre Noll 2008-07-11 22:02:20 +10:00 committed by Neil Brown
commit ce0c8e05f8