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由 Daniel P. Berrangé 提交于
Various methods return a virNWFilterIPAddrLearnReq struct, but the callers are only interested in whether the return value is non-NULL. It is thus preferrable to just return a bool. Reviewed-by: NJiri Denemark <jdenemar@redhat.com> Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>
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