Method now always expects strings (ref #1581)

Author: gsherwood

src/Util/Standards.php

@@ -255,23 +255,21 @@ public static function isInstalledStandard($standard)
  * CodeSniffer/Standards directory. Valid coding standards
  * include a ruleset.xml file.
  *
- * @param string|\SimpleXMLElement $standard The name of the coding standard.
+ * @param string $standard The name of the coding standard.
  *
  * @return string|null
  */
  public static function getInstalledStandardPath($standard)
  {
- $installedPaths = self::getInstalledStandardPaths();
- $standard = (string) $standard;
-
  if (strpos($standard, '.') !== false) {
  return null;
  }
 
+ $installedPaths = self::getInstalledStandardPaths();
  foreach ($installedPaths as $installedPath) {
  $standardPath = $installedPath.DIRECTORY_SEPARATOR.$standard;
  if (file_exists($standardPath) === false) {
- if (basename($installedPath) !== (string) $standard) {
+ if (basename($installedPath) !== $standard) {
  continue;
  }