连续录制视频崩溃

录制第二个视频结束的时候报错
````
 com.seu.magicfilter.encoder.video.TextureMovieEncoder.stopRecording(TextureMovieEncoder.java:168)
com.seu.magicfilter.widget.MagicCameraView.onDrawFrame(MagicCameraView.java:126)
android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1548)
android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1259)
````