Fix crash when CanvasBox draws with nil canvas
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@ -29,6 +29,7 @@ func (this *canvasBox) Invalidate () {
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}
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}
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func (this *canvasBox) Draw (can canvas.Canvas) {
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func (this *canvasBox) Draw (can canvas.Canvas) {
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if can == nil { return }
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this.box.Draw(can)
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this.box.Draw(can)
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if this.userDrawer != nil {
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if this.userDrawer != nil {
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this.userDrawer.Draw (
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this.userDrawer.Draw (
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