log: Display "(no subject)" for commits without a subject
authorMathnerd314 <mathnerd314.gph+hs@gmail.com>
Mon, 23 May 2016 18:52:56 +0000 (12:52 -0600)
committerAtomic Bot <atomic-devel@projectatomic.io>
Wed, 25 May 2016 18:37:47 +0000 (18:37 +0000)
commitc82f15201a51d6ff802139839cffea1a158ec0f9
tree8aff5ba3dac568f088d12ceb456cab96fe80b4a9
parent80774680e8df8d0fa9da295b981be3d8ba86bc8c
log: Display "(no subject)" for commits without a subject

This resolves the ambiguity for a message with a body but no subject,
and also hints that OSTree is using two bytes to store the empty
commit subject/body (when instead they could be stored, or rather,
not stored, as part of the metadata)

Closes: #305
Approved by: cgwalters
src/ostree/ot-dump.c