Merge branch 'ps/leakfixes-part-4'

More leak fixes.

* ps/leakfixes-part-4: (22 commits)
  builtin/diff: free symmetric diff members
  diff: free state populated via options
  builtin/log: fix leak when showing converted blob contents
  userdiff: fix leaking memory for configured diff drivers
  builtin/format-patch: fix various trivial memory leaks
  diff: fix leak when parsing invalid ignore regex option
  unpack-trees: clear index when not propagating it
  sequencer: release todo list on error paths
  merge-ort: unconditionally release attributes index
  builtin/fast-export: plug leaking tag names
  builtin/fast-export: fix leaking diff options
  builtin/fast-import: plug trivial memory leaks
  builtin/notes: fix leaking `struct notes_tree` when merging notes
  builtin/rebase: fix leaking `commit.gpgsign` value
  config: fix leaking comment character config
  submodule-config: fix leaking name entry when traversing submodules
  read-cache: fix leaking hashfile when writing index fails
  bulk-checkin: fix leaking state TODO
  object-name: fix leaking symlink paths in object context
  object-file: fix memory leak when reading corrupted headers
  ...

1 files changed, 4 insertions, 0 deletions

diff --git a/userdiff.h b/userdiff.h
index 7565930337..827361b0bc 100644
--- a/userdiff.h
+++ b/userdiff.h
@@ -8,6 +8,7 @@ struct repository;
 
 struct userdiff_funcname {
 	const char *pattern;
+	char *pattern_owned;
 	int cflags;
 };
 
@@ -20,11 +21,14 @@ struct userdiff_driver {
 	const char *name;
 	struct external_diff external;
 	const char *algorithm;
+	char *algorithm_owned;
 	int binary;
 	struct userdiff_funcname funcname;
 	const char *word_regex;
+	char *word_regex_owned;
 	const char *word_regex_multi_byte;
 	const char *textconv;
+	char *textconv_owned;
 	struct notes_cache *textconv_cache;
 	int textconv_want_cache;
 };