Support udev-197 and higher

The errno value was not set, causing wrong return notifications and
failing to have udev label things correctly.

See https://bugzilla.redhat.com/show_bug.cgi?id=909826#c24 and
see https://bugs.gentoo.org/show_bug.cgi?id=462626

Signed-off-by: Sven Vermeulen <sven.vermeulen@siphos.be>
1 file changed