[Reproducible-builds] Bug#779627: dh-strib-nondeterminism: Don't fail with errornous files

[Ole Streicher]

Package: dh-strip-nondeterminism
Version: 0.005-2
Severity: normal

The python-astropy package contains an invalid gzip file for testing
purposes (astropy/utils/tests/data/invalid.dat.gz). The reproducibility
check fails here with 

   dh_strip_nondeterminism
debian/python-astropy/usr/lib/python2.7/dist-packages/astropy/utils/tests/data/invalid.dat.gz: Malformed gzip file at /usr/share/perl5/File/StripNondeterminism/handlers/gzip.pm line 83.
debian/rules:14: recipe for target 'binary' failed
make: *** [binary] Error 255
dpkg-buildpackage: error: fakeroot debian/rules binary gave error exit status 2

Full log:

https://reproducible.debian.net/rbuild/sid/amd64/python-astropy_0.4.2-2.rbuild.log

Since there is no rule that forbids invalid compressed files,
dh_strip_nondererminism should not fail here.

Ole