Fix previous commit (f1ddc29b) in order to remove strafing bi-planes. When audio has been resampled, the number of bytes given to WASAPI is not the same as the
nubmer of bytes we've consumed from the input.  Previous commit assumed it
was which meant we didn't update the number of consumed bytes correctly,
leading to audio artefacts (sound of strafing bi-planes).

(Fixes f1ddc29b29ad3824259450b264dcb53864c8f213).
Merge branch 'master' of github.com:Metaswitch/libjitsi
Make logs less alarming - don't log exceptions for normal conditions.
Makes use of FMJ logging changes I've just committed.