xiong

https://github.com/452896915/jieba-android/blob/e07ac495a00a88ecd769220852bd626ab9b4ccb7/jieba_android/src/main/java/jackmego/com/jieba_android/viterbi/FinalSeg.java#L97 android 6.0.1设备上此处空指针报错, 文件读取完成后, BufferedReader.readline()返回null, 增加空判断break循环可解决此问题