Merge branch 'ab/plug-leak-in-revisions'

Plug the memory leaks from the trickiest API of all, the revision
walker.

* ab/plug-leak-in-revisions: (27 commits)
  revisions API: add a TODO for diff_free(&revs->diffopt)
  revisions API: have release_revisions() release "topo_walk_info"
  revisions API: have release_revisions() release "date_mode"
  revisions API: call diff_free(&revs->pruning) in revisions_release()
  revisions API: release "reflog_info" in release revisions()
  revisions API: clear "boundary_commits" in release_revisions()
  revisions API: have release_revisions() release "prune_data"
  revisions API: have release_revisions() release "grep_filter"
  revisions API: have release_revisions() release "filter"
  revisions API: have release_revisions() release "cmdline"
  revisions API: have release_revisions() release "mailmap"
  revisions API: have release_revisions() release "commits"
  revisions API users: use release_revisions() for "prune_data" users
  revisions API users: use release_revisions() with UNLEAK()
  revisions API users: use release_revisions() in builtin/log.c
  revisions API users: use release_revisions() in http-push.c
  revisions API users: add "goto cleanup" for release_revisions()
  stash: always have the owner of "stash_info" free it
  revisions API users: use release_revisions() needing REV_INFO_INIT
  revision.[ch]: document and move code declared around "init"
  ...

1 files changed, 8 insertions, 11 deletions

diff --git a/commit.c b/commit.c
index 59b6c3e455..9628716bf2 100644
--- a/commit.c
+++ b/commit.c
@@ -407,17 +407,14 @@ int parse_commit_buffer(struct repository *r, struct commit *item, const void *b
 
 	if (item->object.parsed)
 		return 0;
-
-	if (item->parents) {
-		/*
-		 * Presumably this is leftover from an earlier failed parse;
-		 * clear it out in preparation for us re-parsing (we'll hit the
-		 * same error, but that's good, since it lets our caller know
-		 * the result cannot be trusted.
-		 */
-		free_commit_list(item->parents);
-		item->parents = NULL;
-	}
+	/*
+	 * Presumably this is leftover from an earlier failed parse;
+	 * clear it out in preparation for us re-parsing (we'll hit the
+	 * same error, but that's good, since it lets our caller know
+	 * the result cannot be trusted.
+	 */
+	free_commit_list(item->parents);
+	item->parents = NULL;
 
 	tail += size;
 	if (tail <= bufptr + tree_entry_len + 1 || memcmp(bufptr, "tree ", 5) ||