D7964: cext: change two more vars to Py_ssize_t in manifest.c

[pulkit (Pulkit Goyal)]

pulkit added a comment.
pulkit added subscribers: martinvonz, durin42, pulkit.


  This should go to stable branch right?
  cc: @martinvonz @durin42

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7964/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7964

To: spectral, #hg-reviewers
Cc: pulkit, durin42, martinvonz, mercurial-devel