This should fix an issue with yabridge and MCompressor.
The plugin has two kMain inputs and expects ProcessData:inputs
to always have two entries, even if the second bus is explicitly
disabled.
see https://hastebin.com/ekewojiqep.txt
```
IComponent::activateBus(type = 0, dir = 0, index = 1, state = false)
data.numInputs = 1;
```
TODO: optimize (pre-allocate) if it works as expected
15864be609