Summary:
Some versions of Subversion (1.9 in any case, maybe others) will
duplicate diff headers, if the diff command run through --diff-cmd
returns 0.
This lead to T9970, where the addition of a new file with properties
only shows the properties themselves in the review, not the content of
the new file.
Test Plan: This is a trivial change, is a test needed at all?
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: stevenh, Korvin, eadler
Differential Revision: https://secure.phabricator.com/D14755
Summary: Otherwise svn diff fails when the file is binary but the "svn:mime-type = application/x-shellscript" is missing in it.
Test Plan: arc diff succeeded against deleting a binary file which doesn't have svn:mime-type = application/x-shellscript.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D2915
