Click the red cross the crash kdenlive.... [Fixed]

Start kdenlive (latest SVN) with an empty project.

Click the 'X' for deleting the selected clip (of course there isn't a selected clip, there isn't any clip at all,
but click the X anyway).
Notice that kdenlive crashes.

A number of times I have double-clicked the X to remove a clip when I should have single-clicked. This is how I noticed this problem.