oleaut32: Support for VT_DISPATCH in VarNot.

dlls/oleaut32/variant.c

@@ -4891,10 +4891,21 @@ HRESULT WINAPI VarNot(LPVARIANT pVarIn, LPVARIANT pVarOut)
 {
     VARIANT varIn;
     HRESULT hRet = S_OK;
+    VARIANT temp;
+
+    VariantInit(&temp);
 
     TRACE("(%p->(%s%s),%p)\n", pVarIn, debugstr_VT(pVarIn),
           debugstr_VF(pVarIn), pVarOut);
 
+    /* Handle VT_DISPATCH by storing and taking address of returned value */
+    if ((V_VT(pVarIn) & VT_TYPEMASK) == VT_DISPATCH && ((V_VT(pVarIn) & ~VT_TYPEMASK) == 0))
+    {
+        hRet = VARIANT_FetchDispatchValue(pVarIn, &temp);
+        if (FAILED(hRet)) goto VarNot_Exit;
+        pVarIn = &temp;
+    }
+
     V_VT(pVarOut) = V_VT(pVarIn);
 
     switch (V_VT(pVarIn))
@@ -4966,8 +4977,10 @@ HRESULT WINAPI VarNot(LPVARIANT pVarIn, LPVARIANT pVarOut)
         else
             hRet = DISP_E_TYPEMISMATCH;
     }
+VarNot_Exit:
     if (FAILED(hRet))
       V_VT(pVarOut) = VT_EMPTY;
+    VariantClear(&temp);
 
     return hRet;
 }