diffbk XS.pm

diff -u XS.pm~ ./XS.pm
--- XS.pm~	2005-12-06 07:04:00.000000000 +0100
+++ ./XS.pm	2008-07-09 07:48:31.203125000 +0200
@@ -33,7 +33,7 @@
     if ($MAGIC_COOKIE ne "Do NOT use or require Readonly::XS unless you're me.")
     {
         require Carp;
-        Carp::croak "Readonly::XS is not a standalone module. You should not use it directly.";
+        Carp::croak("Readonly::XS is not a standalone module. You should not use it directly.");
     }
 }