Removed a few dependencies on GDI internals from USER dll.

diff --git a/windows/clipboard.c b/windows/clipboard.c
index 62411b4..0977a87 100644
--- a/windows/clipboard.c
+++ b/windows/clipboard.c
@@ -189,7 +189,7 @@
       if (lpFormat->hData32)
 	DeleteObject(lpFormat->hData32);
       if (lpFormat->hData16)
-	DeleteObject16(lpFormat->hData16);
+	DeleteObject(lpFormat->hData16);
     }
     else if( lpFormat->wFormatID == CF_METAFILEPICT )
     {