ext/soundtouch/gstbpmdetect.cc: Clean up a bit and only allocate a temporary buffer for the data if processing stereo...

Original commit message from CVS:
* ext/soundtouch/gstbpmdetect.cc:
Clean up a bit and only allocate a temporary buffer for the data
if processing stereo data as BPMDetect downmixes from stereo to
mono and stores the result in the input data. Thanks to
Stefan Kost for the suggestions.
2 files changed