LilyTerm closes window if i press [x] on selected tab

[eleksir]

Have to make a new issue instead of this one. -> #134
Thanks for resolving similar bug, but my bug still in place.

Hard to reproduce this issue.
Sometimes when i press [x] button on a tab LilyTerm closes. Maybe there issue with tab' [x] itself and click event get passed to window' "Close" button handler.

I'd like to notice that issue appears when tab is selected.
To select the tab you need just click on it and dotted rectangle appears on tab. Now if you click [x] button on this selected tab whole window closes, not just selected tab.

I catch this issue in i3wm.