lint: Fix E_STRICT warnings

Fixes #262

bootstrap.php

@@ -2,7 +2,7 @@
 
 class Bootstrap {
 
-    function init() {
+    static function init() {
         #Disable Globals if enabled....before loading config info
         if(ini_get('register_globals')) {
            ini_set('register_globals',0);

include/class.osticket.php

@@ -362,8 +362,7 @@ class osTicket {
         return null;
     }
 
-    /* static */
-    function get_root_path($dir) {
+    static function get_root_path($dir) {
 
         /* If run from the commandline, DOCUMENT_ROOT will not be set. It is
          * also likely that the ROOT_PATH will not be necessary, so don't
@@ -394,7 +393,8 @@ class osTicket {
          * the osTicket installation. That is removed from SCRIPT_NAME.
          * What's left is the ROOT_PATH.
          */
-        $frame = array_pop(debug_backtrace(false));
+        $bt = debug_backtrace(false);
+        $frame = array_pop($bt);
         $file = str_replace('\\','/', $frame['file']);
         $path = substr($file, strlen(ROOT_DIR));
         if($path && ($pos=strpos($_SERVER['SCRIPT_NAME'], $path))!==false)