[Kst] Crash trace...

[Andrew Walker]

Here's a trace of the crash (caused by the newly introduced assert) when the 
pixmap size goes to zero:

Using host libthread_db library "/lib/tls/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -174471488 (LWP 8105)]
[New Thread -178676816 (LWP 8106)]
[Thread debugging using libthread_db enabled]
[New Thread -174471488 (LWP 8105)]
[New Thread -178676816 (LWP 8106)]
[Thread debugging using libthread_db enabled]
[New Thread -174471488 (LWP 8105)]
[New Thread -178676816 (LWP 8106)]
[KCrash handler]
#4  0xf6fe97a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#5  0xf5b0e955 in raise () from /lib/tls/libc.so.6
#6  0xf5b10319 in abort () from /lib/tls/libc.so.6
#7  0xf5b07f41 in __assert_fail () from /lib/tls/libc.so.6
#8  0x080adde3 in Kst2DPlot::draw (this=0x9c9c260) at qpixmap.h:271
#9  0x080ade56 in Kst2DPlot::paint (this=0x9c9c260, type=P_PAINT, 
    p=@0xfef8a0e0) at kst2dplot.cpp:2102
#10 0x080c037c in KstViewObject::paint (this=0xa0437d8, type=P_PAINT, 
    p=@0xfef8a0e0) at kstsharedptr.h:110
#11 0x080cb4d7 in KstTopLevelView::paint (this=0xa0437d8, type=P_PAINT, 
    p=@0xfef8a0e0) at ksttoplevelview.cpp:105
#12 0x080c93e2 in KstTopLevelView::paint (this=0xa0437d8, type=P_PAINT)
    at ksttoplevelview.cpp:146
#13 0x080ba464 in KstViewWidget::paintEvent (this=0x9f44728, e=0xfef8a620)
    at kstsharedptr.h:132
#14 0xf60f1a0c in QWidget::event () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#15 0xf605d249 in QApplication::internalNotify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#16 0xf605d3da in QApplication::notify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#17 0xf66a54c8 in KApplication::notify () from /usr/lib/libkdecore.so.4
#18 0xf602b89c in QWidget::repaint () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#19 0xf60ed75b in QWidget::repaint () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#20 0xf5fef4ec in QETWidget::translateConfigEvent ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#21 0xf5ffaf58 in QApplication::x11ProcessEvent ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#22 0xf600d086 in QEventLoop::processEvents ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#23 0xf6072875 in QEventLoop::enterLoop ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#24 0xf60727ce in QEventLoop::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#25 0xf605c44b in QApplication::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#26 0x0814dcfe in main (argc=1, argv=0xfef8b6d4) at main.cpp:760