message: Fix broken Compare icon in `more-dropdown`
diff: @@ -2,6 +2,7 @@ import './more-dropdown.css';
  import React from 'dom-chef';
  import select from 'select-dom';
  import elementReady from 'element-ready';
  +import diffIcon from 'octicon/diff.svg';
  import branchIcon from 'octicon/git-branch.svg';
  import historyIcon from 'octicon/history.svg';
  import packageIcon from 'octicon/package.svg';
  @@ -43,9 +44,7 @@ async function init(): Promise<void> {
  menu.append(
  <a href={compareUrl} className="rgh-reponav-more dropdown-item">
  - <svg aria-hidden="true" className="octicon octicon-diff" width="15" height="16" viewBox="0 0 13 16">
  - <path d="M6 7h2v1H6v2H5V8H3V7h2V5h1zm-3 6h5v-1H3zM7.5 2L11 5.5V15c0 .55-.45 1-1 1H1c-.55 0-1-.45-1-1V3c0-.55.45-1 1-1zm1-2H3v1h5l4 4v8h1V4.5z" fillRule="evenodd"/>
  - </svg> Compare
  + {diffIcon()} Compare
  </a>,
  isEnterprise() ? '' : (
  