libtest-file-contents-perl: FTBFS with Text::Diff 1.44

[gregoa]

We have the discovered the following bug in the Debian package of
Test-File-Contents (https://bugs.debian.org/816527):

It doesn't seem to be a bug in the packaging, so you may want to take
a look. Thanks!

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Source: libtest-file-contents-perl
Version: 0.21-2
Severity: serious
Tags: upstream
Justification: fails to build from source

As seen on ci.d.n., libtest-file-contents-perl fails some tests:
https://ci.debian.net/data/packages/unstable/amd64/libt/libtest-file-contents-perl/20160302_135058.autopkgtest.log.gz
(also confirmed locally).

The ci log at 
https://ci.debian.net/data/packages/unstable/amd64/libt/libtest-file-contents-perl/20160302_135058.log
shows:

-libtext-diff-perl 1.43-1
+libtext-diff-perl 1.44-1

And indeed, Text:Diff's upstream Changes say:

1.44 2016-02-26 NEILB
    - Fixed the handling of text without a trailing newline. This module now
      adds the same text that the diff tool does, "\n\\ No newline at end of
      file\n". Previously this module simply produced broken diffs when one or
      both files had no trailing newline. Fixed by Dave Rolsky. GitHub #1.

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Thanks for considering,
gregor herrmann,
Debian Perl Group

[theory]

v0.23 pushed to CPAN.