Re: [PATCH 0/1] MR8537: widl: Skip writing metadata if winrt_mode is not set.

[Alfred Agrell (＠Alcaro)]

Can confirm this fixes the crashes that Firefox guy reported on irc. Looks good to me.

(Or at least, it fixes my reduced versions of those crashes, I wasn't able to locate the exact files Firefox uses.)
```
import "unknwn.idl";

[object, uuid(1814ceeb-49e2-407f-af99-fa755a7d2607)]
interface ISimpleDOMNode : IUnknown
{
  HRESULT attributesForNames(
    [out, retval, size_is(5)] int * attribValues
  );
}
```
```
import "unknwn.idl";

[object, uuid(E89F726E-C4F4-4c19-BB19-B647D7FA8478)]
interface IAccessible2 : IUnknown
{
  [propget] HRESULT windowHandle
    (
     [out] HWND *windowHandle
    );
}
```