Fix incorrect waveform selection range
取波形的区间末尾应该超过 candidate_end + L_SER_back 之前使用 frontbaseline_end + L_SER_back 只是在多重数暗噪声挑选模式下 candidate_end = frontbaseline_end - 1 恰好满足要求。
/cc @heroxbd
Suggested-by: Jun Weng 2328952185@qq.com Suggested-by: liuyq liuyiqi24@mails.tsinghua.edu.cn Signed-off-by: Yiyang Wu xgreenlandforwyy@gmail.com