Fixed the return value from the usort custom sort function The return value from the function now lines up with the PHP documentation for the usort comparator function

Author: luke-denton-aligent

app/code/Magento/Customer/Block/Account/Navigation.php

@@ -46,6 +46,6 @@ public function getLinks()
      */
     private function compare(SortLinkInterface $firstLink, SortLinkInterface $secondLink)
     {
-        return ($firstLink->getSortOrder() < $secondLink->getSortOrder());
+        return ($firstLink->getSortOrder() < $secondLink->getSortOrder()) ? -1 : 1;
     }
 }