SimpleSAML_SessionHandlerCookie: set cookie only when session_id is updated...

SimpleSAML_SessionHandlerCookie: set cookie only when session_id is updated (like PHP session_start does).

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2889 44740490-163a-0410-bde0-09ae8108e29a

lib/SimpleSAML/SessionHandlerCookie.php

@@ -55,9 +55,8 @@ extends SimpleSAML_SessionHandler {
 			if(!self::isValidSessionID($this->session_id)) {
 				/* We don't have a valid session. Create a new session id. */
 				$this->session_id = self::createSessionID();
+				$this->setCookie($this->cookie_name, $this->session_id);
 			}
-
-			$this->setCookie($this->cookie_name, $this->session_id);
 		}
 
 		return $this->session_id;