Merge branch 'jk/read-object-cleanup'

Code clean-up.

* jk/read-object-cleanup:
  object-file: fix indent-with-space
  packfile: inline custom read_object()
  repo_read_object_file(): stop wrapping read_object_file_extended()
  read_object_file_extended(): drop lookup_replace option
  streaming: inline call to read_object_file_extended()
  object-file: inline calls to read_object()