デバッグモードのBGM再生でエラー

[ハルキゲニア]

Traceback (most recent call last):
File ".\cw\thread.py", line 827, in run
File ".\cw\thread.py", line 879, in _run
File ".\cw\thread.py", line 894, in main_loop
File ".\cw\eventhandler.py", line 125, in run
File ".\cw\eventhandler.py", line 784, in executing_event
File ".\cw\debug\debugger.py", line 1404, in func
AttributeError: 'NoneType' object has no attribute 'losted_sdata'

[k4nagatsuki]

pull request #2571

ご報告ありがとうございます。修正しました。