bundlerepo: use suffix variable
It looks like the refactor in 702a26fec3e2 attempted to establish
this method argument but failed to use it. My editor caught it.
Differential Revision: https://phab.mercurial-scm.org/D1373
#require clang-format test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "$TESTDIR"/..
$ for f in `testrepohg files 'set:(**.c or **.h) and not "listfile:contrib/clang-format-blacklist"'` ; do
> clang-format --style file $f > $f.formatted
> cmp $f $f.formatted || diff -u $f $f.formatted
> rm $f.formatted
> done