aaa: reduce findbugs non useful warning

Vacuous ior operation on AuthzUtils.java:[line 47] in
org.ovirt.engine.core.aaa.AuthzUtils.fetchPrincipalRecordImpl(ExtensionProxy,
ExtKey, Object, boolean, boolean)

This is an integer bit operation (and, or, or exclusive or) that doesn't
do any useful work (e.g., v & 0xffffffff).

Topic: AAA
Change-Id: Icbcfe4e43c276ee561c526b30afdd0780f3bb5ca
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>