fixed .lock files

The name of .lock files was not being set since $ID was not initialized
as global inside the act_edit() function. Only a .txt.lock file was
created causing some ugly errors.

darcs-hash:20050403094446-18876-28ab4f94f034e1db34639d942dc3816cacd1ca5a.gz

inc/actions.php

@@ -194,6 +194,8 @@ function act_auth($act){
  * @author Andreas Gohr <andi@splitbrain.org>
  */
 function act_edit($act){
+  global $ID;
+
   //check if locked by anyone - if not lock for my self
   $lockedby = checklock($ID);
   if($lockedby) return 'locked';