Handle XML parsing errors in TimelineJS::extractUrl()

For reasons unknown, after a migration to another domain on the same server (same PHP version and everything), I started receiving this warning 4 times on my Timeline embedded:

Warning: DOMDocument::loadHTML(): htmlParseEntityRef: expecting ';' in Entity, line: 1 in views_timelinejs_plugin_style_timelinejs->extract_url() (line 596 of /sites/all/modules/views_timelinejs/views_timelinejs_plugin_style_timelinejs.inc).

I first tried making sure any of my special fields with URL's didn't have any special characters, e.g. & vs. & but that didn't seem to fix it. I was able to evaporate the warning by adding two lines into this views_timelinejs_plugin_style_timelinejs.inc function:

  /**
   * Searches a string for HTML attributes that contain URLs and returns them.
   *
   * This will search a string which is presumed to contain HTML for anchor or
   * image tags.  It will return the href or src attribute of the first one it
   * finds.
   *
   * This is basically special handling for core Image fields.  There is no
   * built-in field formatter for outputting a raw URL from an image.  This
   * method allows image fields to "just work" as sources for TimelineJS media
   * and background image URLs.  Anchor tag handling was added for people who
   * forget to output link fields as plain text URLs.
   *
   * @param string $html
   *   A string that contains HTML.
   *
   * @return string
   *   A URL if one was found in the input string, the original string if not.
   */
  protected function extract_url($html) {
    if (!empty($html)) {
      $document = new DOMDocument();
	  $internalErrors = libxml_use_internal_errors(true); // <------ #1
      $document->loadHTML($html);
	  libxml_use_internal_errors($internalErrors); // <------- #2

      // Check for anchor tags.
      $anchor_tags = $document->getElementsByTagName('a');
      if ($anchor_tags->length) {
        return $anchor_tags->item(0)->getAttribute('href');
      }

      // Check for image tags.
      $image_tags = $document->getElementsByTagName('img');
      if ($image_tags->length) {
        return $image_tags->item(0)->getAttribute('src');
      }
    }
    return $html;
  }

Source of the solution at this StackOverflow post:
http://stackoverflow.com/questions/1685277

Again, I don't know why this error started happening but wanted to report this in case it would be useful for others, or if it would possibly help to be committed.

Cheers