Bug#916545: [git-buildpackage/master] PatchSeries: Don't fail if there's only a patch end marker

[Guido Günther]

tag 916545 pending
thanks

Date:   Sun Dec 16 13:21:29 2018 +0100
Author: Guido Günther <a...@sigxcpu.org>
Commit ID: 55edef25112ad4d42fbb90651d37e3b4862895e1
Commit URL: 
https://git.sigxcpu.org/cgit/git-buildpackage//commit/?id=55edef25112ad4d42fbb90651d37e3b4862895e1
Patch URL: 
https://git.sigxcpu.org/cgit/git-buildpackage//patch/?id=55edef25112ad4d42fbb90651d37e3b4862895e1

    PatchSeries: Don't fail if there's only a patch end marker

    If the patch only has '---' we pass empty data to git-mail-info
    otherwise.

    Thanks: James Cowgill for the detailed report
    Closes: #916545