message: Fix travis formatting script
diff: @@ -16,7 +16,7 @@ cd ${SOURCE_DIR}
  # Check C and C++ code with clang-format
  echo "Checking formatting for commit range: ${COMMIT_RANGE}"
  DIFF="$(./scripts/developer/git/git-clang-format --diff ${COMMIT_RANGE})"
  -if [ -n "${DIFF}" ]
  +if [ -n "${DIFF}" ] && [ "${DIFF}" != "no modified files to format" ]
  then
  echo "clang-format:"
  echo " Code format checks failed."
  