[FFmpeg-devel] some minor cleanup (and one leak fix) for dshow

[Roger Pack]

>> -    unsigned int buffer_fullness = (ctx->curbufsize*100)/s->max_picture_buffer;
>> +    unsigned int buffer_fullness = ((float)ctx->curbufsize*100)/s->max_picture_buffer;
>
> this and the 2nd hunk should use int64_t to avoid rounding issues

Ok that seems to work [see attached].

Also another patch attached to guard curbufsize usage.

Thanks.
-roger-
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