Re: olepicture: ref count cleanup

[Alexandre Julliard]

James Hawkins  writes:
> Changelog
> - Use InterlockedDecrement and InterlockedIncrement instead of ++/--.

When making these changes please fix the rest of the function too, any
place that uses This->ref directly is broken, it should use the return
value of the Interlocked call instead. Otherwise there's no point in
making the changes since it still won't be thread-safe.