Merge branch 'sb/leaks'

* sb/leaks:
http: release the memory of a http pack request as well
read-cache: fix memleak
add_to_index(): free unused cache-entry
commit.c: fix a memory leak
http-push: remove unneeded cleanup
merge-recursive: fix memleaks
merge-blobs.c: fix a memleak
builtin/apply.c: fix a memleak
update-index: fix a memleak
read-cache: free cache entry in add_to_index in case of early return

diff --cc http-push.c
Simple merge

diff --cc read-cache.c
Simple merge