lib: fix up some nullability annotations
authorFelix Krull <f_krull@gmx.de>
Sat, 18 May 2019 11:58:34 +0000 (13:58 +0200)
committerAtomic Bot <atomic-devel@projectatomic.io>
Sun, 19 May 2019 14:50:08 +0000 (14:50 +0000)
commit0872708ea1deb393234ee043f0e1d2fd92d43fa4
tree4677bb5a74bb9a5e90525783fd45611ba7450a91
parente607e79f4eacf78d479c93b14253a33e4851eeee
lib: fix up some nullability annotations

Closes: #1861
Approved by: cgwalters
src/libostree/ostree-ref.c