Detecting actual blocksize in a plugin that has no audio in

[mcmartin]

@tomto66

As soon as I tried it in e.g. Cubase the plugin died - Cubase reported a blocksize much larger than what is actually seems to use (which the plugin ignored - and then crashed because it fed way too much samples in the midibuffer).

AFAIK, this would have been caught by pluginval: Anouncing "pluginval" an open-source cross-platform plugin validation tool