Use a single implementation for all overloaded versions of SAMPLE_BUFFER::multiply_by()
Use a single implementation for all overloaded versions of SAMPLE_BUFFER::multiply_by()

jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2,jeremysalwen/Ecasound-LV2