ws2_32: Consider socket with zero ifindex unbound.
Real interface index can't be zero. getsockopt(..., IP_UNICAST_IF, ...) may return success and zero interface index if IP_UNICAST_IF was never set. Avoids error output which doesn't inidcate a real error condition for such case. Signed-off-by:Paul Gofman <pgofman@codeweavers.com> Signed-off-by:
Alexandre Julliard <julliard@winehq.org>
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