small bug fix
small bug fix

ZECTBynmo/node-core-audio,GeorgeStrakhov/node-core-audio,GeorgeStrakhov/node-core-audio,ZECTBynmo/node-core-audio,ZECTBynmo/node-core-audio,GeorgeStrakhov/node-core-audio,ZECTBynmo/node-core-audio,GeorgeStrakhov/node-core-audio