[cups.bugs] [LOW] STR #3534: backendGetMakeModel assumes valid Device ID

[twaugh.redhat]

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[STR New]

Attached is an additional patch to treat the length field with more care. 
This guards against a case (again seen in bug #575901) where we could end
up with length < 0, and this being given to memmove() which expects an
unsigned value.

Link: http://www.cups.org/str.php?L3534
Version: 1.4.2