[CRASH] autosave crash while playing with color adjustment layer

[Melchior FRANZ]

Played with adjustment layers, and while playing with the red/green/blue
color splines, suddenly ... the 'autosaver' kicker in and autokilled my
masterpiece of modern art.   ;-)


#0  0x42c153a1 in KisPerChannelFilterConfiguration::toString (this=0x9b28ad0)
    at /home/m/kde/koffice/krita/plugins/filters/colorsfilters/kis_perchannel_filter.cc:135
135                 sTransfer += QString::number( transfers[i][j] );

(gdb) bt
#0  0x42c153a1 in KisPerChannelFilterConfiguration::toString (this=0x9b28ad0)
    at /home/m/kde/koffice/krita/plugins/filters/colorsfilters/kis_perchannel_filter.cc:135
#1  0x4264defa in KisSaveVisitor::visit (this=0xbfac8de8, layer=0x9b20540) at kis_save_visitor.h:133
#2  0x4278203a in KisAdjustmentLayer::accept (this=0x0, v=@0x2c) at /home/m/kde/koffice/krita/core/kis_adjustment_layer.cc:157
#3  0x4264da6b in KisSaveVisitor::visit (this=0xbfac8e84, layer=0x89ad428) at kis_save_visitor.h:97
#4  0x427b9890 in KisGroupLayer::accept (this=0x0, v=@0x2c) at kis_group_layer.h:85
#5  0x42646d8b in KisDoc::completeSaving (this=0x8710b00, store=0xa5ec3e0) at /home/m/kde/koffice/krita/ui/kis_doc.cc:717
#6  0x40094409 in KoDocument::saveNativeFormat (this=0x8710b00, file=@0xbfac9144)
    at /home/m/kde/koffice/lib/kofficecore/KoDocument.cpp:1096
#7  0x40095a02 in KoDocument::slotAutoSave (this=0x8710b00) at /home/m/kde/koffice/lib/kofficecore/KoDocument.cpp:539
#8  0x40096286 in KoDocument::qt_invoke (this=0x8710b00, _id=15, _o=0xbfac925c) at KoDocument.moc:231
#9  0x42648111 in KisDoc::qt_invoke (this=0x8710b00, _id=15, _o=0xbfac925c) at kis_doc.moc:179
#10 0x4107c4a7 in QObject::activate_signal (this=0x8710cc4, clist=0x869a890, o=0xbfac925c)
    at /home/m/kde/qt-copy/src/kernel/qobject.cpp:2356
#11 0x4107cf8b in QObject::activate_signal (this=0x8710cc4, signal=2) at /home/m/kde/qt-copy/src/kernel/qobject.cpp:2325
#12 0x41414e8d in QTimer::timeout (this=0x8710cc4) at moc_qtimer.cpp:82
#13 0x410a20a0 in QTimer::event (this=0x8710cc4, e=0xbfac9558) at /home/m/kde/qt-copy/src/kernel/qtimer.cpp:219
#14 0x41011c70 in QApplication::internalNotify (this=0xbfaca46c, receiver=0x8710cc4, e=0xbfac9558)
    at /home/m/kde/qt-copy/src/kernel/qapplication.cpp:2635

m.