Merge branch 'ps/leakfixes-part-7'

More leak-fixes.

* ps/leakfixes-part-7: (23 commits)
  diffcore-break: fix leaking filespecs when merging broken pairs
  revision: fix leaking parents when simplifying commits
  builtin/maintenance: fix leak in `get_schedule_cmd()`
  builtin/maintenance: fix leaking config string
  promisor-remote: fix leaking partial clone filter
  grep: fix leaking grep pattern
  submodule: fix leaking submodule ODB paths
  trace2: destroy context stored in thread-local storage
  builtin/difftool: plug several trivial memory leaks
  builtin/repack: fix leaking configuration
  diffcore-order: fix leaking buffer when parsing orderfiles
  parse-options: free previous value of `OPTION_FILENAME`
  diff: fix leaking orderfile option
  builtin/pull: fix leaking "ff" option
  dir: fix off by one errors for ignored and untracked entries
  builtin/submodule--helper: fix leaking remote ref on errors
  t/helper: fix leaking subrepo in nested submodule config helper
  builtin/submodule--helper: fix leaking error buffer
  builtin/submodule--helper: clear child process when not running it
  submodule: fix leaking update strategy
  ...

1 files changed, 5 insertions, 2 deletions

diff --git a/diff.c b/diff.c
index 84a6bb0868..173cbe2bed 100644
--- a/diff.c
+++ b/diff.c
@@ -443,8 +443,10 @@ int git_diff_ui_config(const char *var, const char *value,
 	}
 	if (!strcmp(var, "diff.wordregex"))
 		return git_config_string(&diff_word_regex_cfg, var, value);
-	if (!strcmp(var, "diff.orderfile"))
+	if (!strcmp(var, "diff.orderfile")) {
+		FREE_AND_NULL(diff_order_file_cfg);
 		return git_config_pathname(&diff_order_file_cfg, var, value);
+	}
 
 	if (!strcmp(var, "diff.ignoresubmodules")) {
 		if (!value)
@@ -4778,7 +4780,7 @@ void repo_diff_setup(struct repository *r, struct diff_options *options)
 	if (diff_indent_heuristic)
 		DIFF_XDL_SET(options, INDENT_HEURISTIC);
 
-	options->orderfile = diff_order_file_cfg;
+	options->orderfile = xstrdup_or_null(diff_order_file_cfg);
 
 	if (!options->flags.ignore_submodule_set)
 		options->flags.ignore_untracked_in_submodules = 1;
@@ -6730,6 +6732,7 @@ void diff_free(struct diff_options *options)
 		FREE_AND_NULL(options->objfind);
 	}
 
+	FREE_AND_NULL(options->orderfile);
 	for (size_t i = 0; i < options->anchors_nr; i++)
 		free(options->anchors[i]);
 	FREE_AND_NULL(options->anchors);