[PATCH 1/1] ui-log: fix data corruption

[John Keeping]

On Fri, Oct 07, 2016 at 11:21:23PM +0200, Christian Hesse wrote:
> "Jason A. Donenfeld" <Jason at zx2c4.com> on Fri, 2016/10/07 21:43:
> > Does this ever get freed, though?
> 
> I ran cgit in valgrind with this patch applied. No changes in what is lost -
> so looks like this is freed later on.

It isn't lost because there's a global reference to it via the commit
cache, but valgrind's "still reachable" statistic definitely grows as a
result of this patch.

I don't think this is the cause of the underlying problem Sylvain
reported.  That's more likely to be the use of
get_cached_commit_buffer() in cgit_parse_commit().  Shouldn't that be
get_commit_buffer(), which uses the cached buffer if it's available?
Otherwise we must call libgit's parse_commit() before calling
cgit_parse_commit(), which all seems a bit fragile.