wintrust: Add a few missing defines.
diff --git a/include/wintrust.h b/include/wintrust.h
index 2e4006b..228d868 100644
--- a/include/wintrust.h
+++ b/include/wintrust.h
@@ -385,6 +385,10 @@
#include <poppack.h>
+#define WVT_OFFSETOF(t,f) ((ULONG)((ULONG_PTR)(&((t*)0)->f)))
+#define WVT_ISINSTRUCT(t,s,f) (WVT_OFFSETOF(t,f) + sizeof(((t*)0)->f) <= (s))
+#define WVT_IS_CBSTRUCT_GT_MEMBEROFFSET(t,s,f) WVT_ISINSTRUCT(t,s,f)
+
#define WTPF_TRUSTTEST 0x00000020
#define WTPF_TESTCANBEVALID 0x00000080
#define WTPF_IGNOREEXPIRATION 0x00000100
