Merge branch 'js/plug-leaks' into maint

Fix memory leaks pointed out by Coverity (and people).

* js/plug-leaks: (26 commits)
  checkout: fix memory leak
  submodule_uses_worktrees(): plug memory leak
  show_worktree(): plug memory leak
  name-rev: avoid leaking memory in the `deref` case
  remote: plug memory leak in match_explicit()
  add_reflog_for_walk: avoid memory leak
  shallow: avoid memory leak
  line-log: avoid memory leak
  receive-pack: plug memory leak in update()
  fast-export: avoid leaking memory in handle_tag()
  mktree: plug memory leaks reported by Coverity
  pack-redundant: plug memory leak
  setup_discovered_git_dir(): plug memory leak
  setup_bare_git_dir(): help static analysis
  split_commit_in_progress(): simplify & fix memory leak
  checkout: fix memory leak
  cat-file: fix memory leak
  mailinfo & mailsplit: check for EOF while parsing
  status: close file descriptor after reading git-rebase-todo
  difftool: address a couple of resource/memory leaks
  ...

1 files changed, 5 insertions, 3 deletions

diff --git a/builtin/worktree.c b/builtin/worktree.c
index 1722a9bdc2..ff5dfd2b10 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -414,9 +414,11 @@ static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
 				find_unique_abbrev(wt->head_sha1, DEFAULT_ABBREV));
 		if (wt->is_detached)
 			strbuf_addstr(&sb, "(detached HEAD)");
-		else if (wt->head_ref)
-			strbuf_addf(&sb, "[%s]", shorten_unambiguous_ref(wt->head_ref, 0));
-		else
+		else if (wt->head_ref) {
+			char *ref = shorten_unambiguous_ref(wt->head_ref, 0);
+			strbuf_addf(&sb, "[%s]", ref);
+			free(ref);
+		} else
 			strbuf_addstr(&sb, "(error)");
 	}
 	printf("%s\n", sb.buf);