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Commit 17269303 authored by David Herrmann's avatar David Herrmann Committed by Zbigniew Jędrzejewski-Szmek
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udev: fix NULL-ptr deref 

Make sure we properly validate the return value of
udev_device_get_sysattr_value(). It might be NULL for several reasons.

(cherry picked from commit 975a9007)
parent 177264ca
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