Rescanning a folder leads to crash in the end

[humdinger]

This is hrev45105.

• Open DiskUsage and scan a volume
• Right-click on some folder and do a "Rescan" of it

-> All outer circle segments disappear.

• Either click the "Rescan" button or quit the app

-> crash

The backtrace (complete report attached):

	0x7807ccfc	0x58d881	debugger + 0x39
	0x7807cd2c	0x5998a0	__assert_fail + 0x4c
	0x7807cd6c	0x60b4d2	BPrivate::processHeap::free(void*) + 0x5e
	0x7807cd9c	0x60cbdf	free + 0xab
	0x7807cdd4	0x58b977	operator delete(void) + 0x1f
	0x7807ce04	0x21c839	_._8FileInfo + 0xad
	0x7807ce34	0x21cdd9	_._14VolumeSnapshot + 0x25
	0x7807cee4	0x21b984	Scanner::_RunScan(FileInfo*) + 0x660
	0x7807cf14	0x21b01d	Scanner::MessageReceived(BMessage*) + 0x45
	0x7807cf44	0x31201d	BLooper::DispatchMessage(BMessage*, BHandler*) + 0x59
	0x7807cf84	0x313947	BLooper::task_looper() + 0x203
	0x7807cfb4	0x313539	BLooper::_task0_(void*) + 0x3d
	0x7807cfdc	0x5921d1	thread_entry + 0x21
	00000000	0x7807cfec	?

[humdinger]

crash after rescanning a folder

[Janus]

Fixed in hrev50725.