FS#11995 - screendump problems caused by r29445
r29445 introduced problems with screendump on sansa e200 and e200v2 (and possibly more). Screendump works properly with r29444.
Steps to reproduce:
1. delete or backup existing .rockbox directory
2. install r29445 (or later)
4. navigate to System -> Debug (Keep Out!) -> Screendump and press select to enable
5. attach USB cable to trigger screendump
On e200, this results in:
Stkov usb (0)
on e200v2, this results in a deadlock - no keypad response - backlight & button light never timeout. Upon reboot, multiple dump files exist.
On e200v2 only, when dircache is disabled, screendump will function properly.
This task depends upon