Fixed a typo in stream tracing.
Fixed a typo in stream tracing.

AaronZhangL/swig-wrapper,AaronZhangL/swig-wrapper,unispeech/swig-wrapper,unispeech/swig-wrapper,AaronZhangL/swig-wrapper,unispeech/swig-wrapper,AaronZhangL/swig-wrapper,AaronZhangL/swig-wrapper,unispeech/swig-wrapper,AaronZhangL/swig-wrapper,unispeech/swig-wrapper,unispeech/swig-wrapper