QListView: corrupted display in low-memory conditions (Symbian only)

Preconditions:

1. A theme with an image in the background (as opposed to a color or a gradient) should be installed on the device/emulator.
2. Device/emulator is in the portrait mode.

Steps to reproduce:

1. Compile and start the program.
2. Rotate the device. Wait a couple of seconds.
3. Rotate the device once again.
4. Double tap the `5' item, type in the word `test'.
5. Scroll the list a little bit down, than a little bit up.

The actual result: corrupted display, see the attached screenshot (matrixhasyou.png)
The expected result: some sensible error message (like 'Out of memory'), an exception, etc.