Correctly refer commit_message in DiffCommit.summary

Review Request #10079 — Created July 11, 2018 and submitted — Latest diff uploaded

Information

Review Board
release-4.0.x
fb580da...

Reviewers

During one of the refactors that occurred, DiffCommit.description was
changed to DiffCommit.commit_message and this occurrance was missed.

  • Ran unit tests.
  • With this patch applied, commit summaries can be calculated.