Right click closes build menu

When building pipes and belts have the last right click close the build menu instead of having to press escape.

Or maybe left click somewhere empty on the map? Or a close X button on the top right? This needs some sort of mouse support.

I say it should be treated like any other popup. For example, a building details popup closes when you left-click outside of it. Why not make the build menu do the same. It would be only consistent.