isSynth causes assertion

Hi Jules,

compiling the demo plugin with isSynth = 1 will hit an assertion if you unload the plugin
from a host (in my case Ableton). Seems that getPlayHead()->getCurrentPosition (newTime)
in processBlock causes the problem. If you don’t call it, you wont hit the assertion!

I am on Mac OSX.

Best
Joerg

Sorry… Assertion in VST wrapper line 579!