Added hlink.idl.

diff --git a/dlls/uuid/uuid.c b/dlls/uuid/uuid.c
index 229a6c6..f38a55d 100644
--- a/dlls/uuid/uuid.c
+++ b/dlls/uuid/uuid.c
@@ -61,6 +61,7 @@
 #include "xmldom.h"
 #include "downloadmgr.h"
 #include "objsel.h"
+#include "hlink.h"
 
 /* FIXME: cguids declares GUIDs but does not define their values */