Merge branch 'ah/plugleaks'

Plug various leans reported by LSAN.

* ah/plugleaks:
  builtin/rm: avoid leaking pathspec and seen
  builtin/rebase: release git_format_patch_opt too
  builtin/for-each-ref: free filter and UNLEAK sorting.
  mailinfo: also free strbuf lists when clearing mailinfo
  builtin/checkout: clear pending objects after diffing
  builtin/check-ignore: clear_pathspec before returning
  builtin/bugreport: don't leak prefixed filename
  branch: FREE_AND_NULL instead of NULL'ing real_ref
  bloom: clear each bloom_key after use
  ls-files: free max_prefix when done
  wt-status: fix multiple small leaks
  revision: free remainder of old commit list in limit_list

builtin/rm.c

@@ -342,6 +342,8 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 		if (!seen_any)
 			exit(ret);
 	}
+	clear_pathspec(&pathspec);
+	free(seen);
 
 	if (!index_only)
 		submodules_absorb_gitdir_if_needed();