bug with lintian when input file doesn't exist

[John Pye <john.pye@anu.edu.au>]

Hi there

I've got a small bug to required in Lintian. Using the automated build
tool, 'buildbot', I found this:

/bin/sh -c lintian dist/*.deb
 in dir /home/buildbot/slaves/ascend/ubuntu-710-deb/build (timeout 1200 secs)
 watching logfiles {}
 argv: ['/bin/sh', '-c', 'lintian dist/*.deb']
 environment:
  HOME=/home/buildbot
  LANG=en_AU.UTF-8
  LOGNAME=buildbot
  PATH=/usr/bin:/bin
  PWD=/home/buildbot
  SHELL=/bin/sh
error: cannot find binary, udeb or source package dist/*.deb in dist or lab (skipping)
program finished with exit code 0


In this case, lintian should return non-zero exit code, because it has
not been able to perform the check as request, because the .deb file it
was attempting to check was not actually present.

Cheers
JP