Fix regression in mustella tests introduced in revision 2863.
Checkintests: mustella Accordion
Fix a code path where the contentHolder?\226?\128?\153s width and height were not being set. The problem appeared because a code changed in revision 2863 fixed a null pointer exception in contentSize() that was being caught in doScaleContent() and setting the contentHolder size. Without the exception the contentHolder?\226?\128?\153s size was not being set.