netioapi.h: Include ws2ipdef.h.

(cherry picked from commit 9bd8fe9148924840d315b4c915dd099955ea89d1)
diff --git a/mingw-w64-headers/include/netioapi.h b/mingw-w64-headers/include/netioapi.h
index 8355136..9e7f67d 100644
--- a/mingw-w64-headers/include/netioapi.h
+++ b/mingw-w64-headers/include/netioapi.h
@@ -7,6 +7,7 @@
 #define _INC_NETIOAPI
 
 #include <ws2def.h>
+#include <ws2ipdef.h>
 #include <iprtrmib.h>
 #include <ifdef.h>
 #include <ntddndis.h>