Merge branch 'cc/split-index-config'

The split-index code configuration code used an unsafe git_path()
function without copying its result out.

* cc/split-index-config:
  read-cache: avoid using git_path() in freshen_shared_index()

read-cache.c

@@ -1824,9 +1824,10 @@ unmap:
  */
 static void freshen_shared_index(char *base_sha1_hex, int warn)
 {
-	const char *shared_index = git_path("sharedindex.%s", base_sha1_hex);
+	char *shared_index = git_pathdup("sharedindex.%s", base_sha1_hex);
 	if (!check_and_freshen_file(shared_index, 1) && warn)
 		warning("could not freshen shared index '%s'", shared_index);
+	free(shared_index);
 }
 
 int read_index_from(struct index_state *istate, const char *path)