Merge branch 'ps/leakfixes-part-3' into ps/leakfixes-part-4

* ps/leakfixes-part-3: (24 commits) commit-reach: fix trivial memory leak when computing reachability convert: fix leaking config strings entry: fix leaking pathnames during delayed checkout object-name: fix leaking commit list items t/test-repository: fix leaking repository builtin/credential-cache: fix trivial leaks builtin/worktree: fix leaking derived branch names builtin/shortlog: fix various trivial memory leaks builtin/rerere: fix various trivial memory leaks builtin/credential-store: fix leaking credential builtin/show-branch: fix several memory leaks builtin/rev-parse: fix memory leak with `--parseopt` builtin/stash: fix various trivial memory leaks builtin/remote: fix various trivial memory leaks builtin/remote: fix leaking strings in `branch_list` builtin/ls-remote: fix leaking `pattern` strings builtin/submodule--helper: fix leaking buffer in `is_tip_reachable` builtin/submodule--helper: fix leaking clone depth parameter builtin/name-rev: fix various trivial memory leaks builtin/describe: fix trivial memory leak when describing blob ...