(legacy) authgui.inc,/ (root) is /index.php, make sure we're matching the...

(legacy) authgui.inc,/ (root) is /index.php, make sure we're matching the correct item. https://github.com/opnsense/core/issues/724

(cherry picked from commit bd62b3eb)

src/etc/inc/authgui.inc

@@ -52,8 +52,9 @@ function cmp_page_matches($page, & $matches, $fullwc = true) {
     /* look for a match */
     foreach ($matches as $match) {
         /* possibly ignore full wildcard match */
-        if (!$fullwc && !strcmp($match ,"*"))
+        if (!$fullwc && !strcmp($match ,"*")) {
             continue;
+        }
 
         /* compare exact or wildcard match */
         $match =  str_replace(array(".", "*","?"), array("\.", ".*","\?"), $match);
@@ -87,6 +88,9 @@ function isAllowedPage($page)
             }
         }
     }
+    if ($page == "/") {
+        $page = "/index.php";
+    }
 
     /* user privelege access check */
     $allowedpages = getAllowedPages($_SESSION['Username']);