Appease -vet for haiku

vendor/directx/dxc/dxcdef_haiku.odin

@@ -0,0 +1,37 @@
+#+build haiku
+package directx_dxc
+import "core:c"
+
+FILETIME :: struct {
+	dwLowDateTime: DWORD,
+	dwHighDateTime: DWORD,
+}
+
+GUID :: struct {
+	Data1: DWORD,
+	Data2: WORD,
+	Data3: WORD,
+	Data4: [8]BYTE,
+}
+
+BYTE            :: distinct u8
+WORD            :: u16
+DWORD           :: u32
+BOOL            :: distinct b32
+SIZE_T          :: uint
+ULONG           :: c.ulong
+CLSID           :: GUID
+IID             :: GUID
+LONG            :: distinct c.long
+HRESULT         :: distinct LONG
+wstring         :: [^]c.wchar_t
+BSTR            :: wstring
+
+IUnknown :: struct {
+	using _iunknown_vtable: ^IUnknown_VTable,
+}
+IUnknown_VTable :: struct {
+	QueryInterface: proc "c" (this: ^IUnknown, riid: ^IID, ppvObject: ^rawptr) -> HRESULT,
+	AddRef:         proc "c" (this: ^IUnknown) -> ULONG,
+	Release:        proc "c" (this: ^IUnknown) -> ULONG,
+}