Crash when IconVisibility is set to False

[Punkster812]

Found this and exactly what I was looking for, so thanks.

When you have the IconVisibility="False", the code deletes the first column every time the AlertBarWpf is displayed. So the first time it runs it does what it's supposed to; removes the icon. The next time the text is shown where the icon would go. Third time the code executes, it throws an exception because there is no more columns to remove.

The line with the issue is this:
grdParent.ColumnDefinitions.RemoveAt(0);

[FroggieFrog]

I fixed this in my fork: https://github.com/FroggieFrog/AlertBarWpf