Mac OS X Intel / 10.4.11  /  crash when changing the iconset

The log of the crash shown SvtMiscOptions_Impl::CallListeners() as potential candidate.
After tracing a bit, looks list, for some reason, aList is not defined, or the right member is missing, or, 
dont know exactly.

Testing if aList != NULL and I can no longer repeat the crash.  

@pl : can you please have a look ? ( I'll attach a patch )


The log of the crash (randomly repeatable) :

Command: soffice.bin
Path:    /Users/ericb/Desktop/Prague2008/OpenOffice.org.app/Contents/MacOS/soffice.bin
Parent:  WindowServer [58]

Version: 3.0.0 (???)

PID:    3911
Thread: 0

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0x573d0431

Thread 0 Crashed:
0   <<00000000>> 	0x573d0431 0 + 1463616561
1   libfwkmxi.dylib       	0x1644abd9 component_writeInfo + 364471
2   libsvtmxi.dylib       	0x01771c8d SvtMiscOptions_Impl::CallListeners() + 65
3   libsvtmxi.dylib       	0x01772480 SvtMiscOptions_Impl::ImplSetSymbolsStyle(bool, short, 
rtl::OUString const&) + 294
4   libsvtmxi.dylib       	0x0177259e SvtMiscOptions::SetSymbolsStyle(short) + 72
5   libcuimxi.dylib       	0x26c4edab CreateDialogFactory + 193467
6   libcuimxi.dylib       	0x26c7c74b CreateDialogFactory + 380251
7   libvclmxi.dylib       	0x02184547 Control::ImplCallEventListenersAndHandler(unsigned long, Link 
const&, void*) + 115
8   libvclmxi.dylib       	0x02175daf Button::Click() + 39
9   libvclmxi.dylib       	0x02172c52 Window::EndTracking(unsigned short) + 262
10  libvclmxi.dylib       	0x0216d560 ImplHandleMouseEvent(Window*, unsigned short, unsigned char, 
long, long, unsigned long, unsigned short, unsigned short) + 874
11  libvclmxi.dylib       	0x0216f57d ImplWindowFrameProc(Window*, SalFrame*, unsigned short, void 
const*) + 579
12  libvclmxi.dylib       	0x021e182c AquaSalFrame::~AquaSalFrame [in-charge deleting]() + 10494
13  libvclmxi.dylib       	0x021df6b5 AquaSalFrame::~AquaSalFrame [in-charge deleting]() + 1927