message: lint: Don't use TRAVIS_COMMIT_RANGE for commit-script-check
diff: export LC_ALL=C
  if [ "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then
  - test/lint/commit-script-check.sh $TRAVIS_COMMIT_RANGE
  + # TRAVIS_BRANCH will be present in a Travis environment. For builds triggered
  + # by a pull request this is the name of the branch targeted by the pull request.
  + # https://docs.travis-ci.com/user/environment-variables/
  + COMMIT_RANGE="$TRAVIS_BRANCH..HEAD"
  + test/lint/commit-script-check.sh $COMMIT_RANGE
  fi
  test/lint/git-subtree-check.sh src/crypto/ctaes
  