Fix NPE when _revisionNumber in ChangeMessageInfo is null

The patch set ID of a ChangeMessage is optional.

Change-Id: I8f7be31eadd35cbafec3fe83da9e6d8d19c8bbce
1 file changed
tree: fdcfc692874a9c666e458bb293273881e6cfc68c
  1. .buckconfig
  2. .gitignore
  3. .settings/
  4. BUCK
  5. LICENSE
  6. VERSION
  7. lib/
  8. pom.xml
  9. src/