netfilter: bridge: refactor clearing BRNF_NF_BRIDGE_PREROUTING
netfilter: bridge: refactor clearing BRNF_NF_BRIDGE_PREROUTING

use binary AND on complement of BRNF_NF_BRIDGE_PREROUTING to unset
bit in nf_bridge->mask.

Signed-off-by: Bernhard Thaler <273e5720a961f7b8fa40512ee5fdd823215c3f8b@wvnet.at>
Signed-off-by: Pablo Neira Ayuso <707d14912bb250caf67dfe0ea4035681fbfc4f56@netfilter.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs