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, 9 insertions, 7 deletions

diff --git a/builtin/help.c b/builtin/help.c
index a509241a80..4a5a079070 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -54,7 +54,7 @@ static enum help_action {
 	HELP_ACTION_CONFIG_SECTIONS_FOR_COMPLETION,
 } cmd_mode;
 
-static const char *html_path;
+static char *html_path;
 static int verbose = 1;
 static enum help_format help_format = HELP_FORMAT_NONE;
 static int exclude_guides;
@@ -411,6 +411,7 @@ static int git_help_config(const char *var, const char *value,
 	if (!strcmp(var, "help.htmlpath")) {
 		if (!value)
 			return config_error_nonbool(var);
+		free(html_path);
 		html_path = xstrdup(value);
 		return 0;
 	}
@@ -515,23 +516,24 @@ static void show_info_page(const char *page)
 static void get_html_page_path(struct strbuf *page_path, const char *page)
 {
 	struct stat st;
+	const char *path = html_path;
 	char *to_free = NULL;
 
-	if (!html_path)
-		html_path = to_free = system_path(GIT_HTML_PATH);
+	if (!path)
+		path = to_free = system_path(GIT_HTML_PATH);
 
 	/*
 	 * Check that the page we're looking for exists.
 	 */
-	if (!strstr(html_path, "://")) {
-		if (stat(mkpath("%s/%s.html", html_path, page), &st)
+	if (!strstr(path, "://")) {
+		if (stat(mkpath("%s/%s.html", path, page), &st)
 		    || !S_ISREG(st.st_mode))
 			die("'%s/%s.html': documentation file not found.",
-				html_path, page);
+				path, page);
 	}
 
 	strbuf_init(page_path, 0);
-	strbuf_addf(page_path, "%s/%s.html", html_path, page);
+	strbuf_addf(page_path, "%s/%s.html", path, page);
 	free(to_free);
 }