Fix crash when decoding speech from mic in silence
Fix crash when decoding speech from mic in silence

DanielAsher/TLSphinx,DanielAsher/TLSphinx,tryolabs/TLSphinx,tryolabs/TLSphinx,patelmayank/TLSphinx,tryolabs/TLSphinx,cmusphinx/TLSphinx,DanielAsher/TLSphinx,patelmayank/TLSphinx,patelmayank/TLSphinx,cmusphinx/TLSphinx,tryolabs/TLSphinx,cmusphinx/TLSphinx