Added type PWORD.

diff --git a/include/windef.h b/include/windef.h
index a03a7a3..095237b 100644
--- a/include/windef.h
+++ b/include/windef.h
@@ -158,6 +158,7 @@
 typedef CHAR           *PCHAR;
 typedef UCHAR          *PUCHAR;
 typedef BYTE           *PBYTE;
+typedef WORD           *PWORD;
 typedef ULONG          *PULONG;
 typedef LONG           *PLONG;
 typedef DWORD          *PDWORD;