[PATCH v3 0/2] show-brach: segfault fix from Gregory David

This is a version of https://lore.kernel.org/git/225b410d-2d98-8c0b-c289-22f753c175d4@p1sec.com/ that applies with "git am", the patch got munged in transit (from the looks of it from Thunderbird's wrapping).

I added a 1/2 to factor out some shared code used by the segfault fix, and made the now-smaller 2/2 use that function.

I also renamed some varibles to reduce wrapping, and made the append_one_rev() come after the ref formatting. Other similar code above does that, it looks to me like they're equivalent (append_one_rev increments ref_name_cnt).

Gregory David (1):
  show-branch: fix SEGFAULT when `--current` and `--reflog` together

Ævar Arnfjörð Bjarmason (1):
  show-branch: refactor in preparation for next commit

 builtin/show-branch.c  | 47 ++++++++++++++++++++++++++++++------------
 t/t3202-show-branch.sh | 43 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+), 13 deletions(-)