Implement EM_GETOLEINTERFACE.

diff --git a/dlls/uuid/uuid.c b/dlls/uuid/uuid.c
index 60bab9e..80e9abd 100644
--- a/dlls/uuid/uuid.c
+++ b/dlls/uuid/uuid.c
@@ -56,6 +56,7 @@
 #include "dispex.h"
 #include "mlang.h"
 #include "mshtml.h"
+#include "richole.h"
 
 /* FIXME: cguids declares GUIDs but does not define their values */