Crash while extracting files

[SatoMew]

sjisunzip seems to crash when it detects that a file is (apparently) being used by another process, namely executable files. The crash logs consistently mention mscorlib and System.IO.IOException.

[kjerk]

Thanks for the report, since most operations are readonly I'll see if it's possible to try to really non-exclusively open the file stream, at the very least not crash with an exception.