undef some more.

include/lib9.h

diff --git a/include/lib9.h b/include/lib9.h
index a26de2d..8d5bdf9 100644
--- a/include/lib9.h
+++ b/include/lib9.h
@@ -670,6 +670,11 @@
 #undef RFMEM
 #undef RFNOWAIT
 #undef RFCFDG
+#undef RFNAMEG
+#undef RFENVG
+#undef RFCENVG
+#undef RFCFDG
+#undef RFCNAMEG
 #endif
 
 enum