tree c35e2ad59af10dd6d12ee55721e1e695a3070bcc
parent ccee8cabc3fd187046bbfccb407de95dafc310f6
author Patrick Steinhardt <ps@pks.im> 1479206691 +0100
committer Edward Thomson <ethomson@github.com> 1483988773 -0500

smart_pkt: treat empty packet lines as error

The Git protocol does not specify what should happen in the case
of an empty packet line (that is a packet line "0004"). We
currently indicate success, but do not return a packet in the
case where we hit an empty line. The smart protocol was not
prepared to handle such packets in all cases, though, resulting
in a `NULL` pointer dereference.

Fix the issue by returning an error instead. As such kind of
packets is not even specified by upstream, this is the right
thing to do.