Remove warnings continued

src/account.cpp

src/account.h

src/audio/alsalayer.cpp

src/audio/alsalayer.h

src/audio/audiodevice.cpp

src/audio/audiofile.h

src/audio/audiolayer.h

src/audio/audioloop.h

src/audio/audiortp.cpp

src/audio/audiortp.h

src/audio/audiostream.cpp

src/audio/audiostream.h

src/audio/codecDescriptor.cpp

src/audio/dtmf.cpp

src/audio/dtmfgenerator.cpp

src/audio/dtmfgenerator.h

src/audio/pulselayer.cpp

src/audio/pulselayer.h

src/audio/ringbuffer.cpp

src/audio/ringbuffer.h