Hold notes are allowed to be placed outside of charting area, causing game crash

[KaneryU]

Title.
Steps:
Start a hold note inside the charting area, then drag your mouse outside.
When you test, the game will crash.

I kind of think this 'feature' is cool, the crash should just be removed. Imagine if during a song's beatdrop notes come at you outside of the area, that would be fun (but probably not rankable).

[flustix]

Fixed with 2424b7f