Merge branch 'ab/diff-free-more'

Leakfixes.

* ab/diff-free-more:
  diff.[ch]: have diff_free() free options->parseopts
  diff.[ch]: have diff_free() call clear_pathspec(opts.pathspec)

diff.c

@@ -6452,6 +6452,8 @@ void diff_free(struct diff_options *options)
 
 	diff_free_file(options);
 	diff_free_ignore_regex(options);
+	clear_pathspec(&options->pathspec);
+	FREE_AND_NULL(options->parseopts);
 }
 
 void diff_flush(struct diff_options *options)