[PATCH 0/3] setup: add `clear_repository_format()`

Patch 3 adds `clear_repository_format()` to plug a few memory leaks related to `struct repository_format`. In preparation for that, patch 2 tightens up some code which uses a possibly-undefined value from the struct. Patch 1 drops a return value that no-one has ever used.

Cc-ing Peff, who introduced `struct repository_format`, and brian, who introduced its `hash_algo` field (see patch 2).

Martin Ågren (3):
  setup: drop return value from `read_repository_format()`
  setup: do not use invalid `repository_format`
  setup: add `clear_repository_format()`

 cache.h      | 13 +++++++++----
 repository.c |  1 +
 setup.c      | 19 ++++++++++++++++---
 3 files changed, 26 insertions(+), 7 deletions(-)