[PATCH] D154016: [clang][modules] Avoid serializing all diag mappings in non-deterministic order

[Steven Wu via Phabricator via cfe-commits]

steven_wu accepted this revision.
steven_wu added a comment.
This revision is now accepted and ready to land.

LGTM


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D154016/new/

https://reviews.llvm.org/D154016