Delete file would report two status codes if a delete failed due to access denied. Fix for AR-1005.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5032 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/ftp/FTPSrvSession.java

@@ -2655,6 +2655,7 @@ public class FTPSrvSession extends SrvSession implements Runnable
             // Session does not have write access to the filesystem
 
             sendFTPResponse(550, "Access denied");
+            return;
         }
         catch (Exception ex)
         {