[Bug 55931] vbscript: empty MOD 100000 returns garbage instead of 0

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55931

--- Comment #2 from Jason Millard  ---
ahh, the memset is clearing out in the tests.

Would the correct fix be doing a memset or adding a VariantInit

```
HRESULT WINAPI VarMod(LPVARIANT left, LPVARIANT right, LPVARIANT result)
{
    HRESULT      rc         = E_FAIL;
    int          resT = 0;
    VARIANT      lv,rv;
    VARIANT tempLeft, tempRight;

VariantInit(result);
    VariantInit(&tempLeft);
    VariantInit(&tempRight);
    VariantInit(&lv);
    VariantInit(&rv);
```