Mac: Crash when clearing a style sheet on a QTableView

1) Build the attached qtbug17333.tgz on Mac
2) Press Clear button to the right of the table view
3) Observe crash

Summary: Setting the style sheet "background-color: rgb(34, 34, 34); border-radius: 0px; height: 16px;"
"border: 1px solid rgb(102, 102, 102); color: rgb(153, 153, 153);" and afterwards
clearing it causes a crash (endless recursion in QHeaderView).

This was reported as a Qt Creator/Designer bug:

1) Open attached .ui file with QtCreator on OS X
2) Select the large dark tableview widget (titlesTableView)
3) In the properties pane, click the reset button next to the stylesheet property
4) crash .....

When doing the same in the stand-alone designer, no crash occurs.
Tested also with qtcreator 2.1.0-rc1 on Linux, no crash.