JS error upon ending in-place editing on pages without in-place editables

Really minor issue, but still a litte bug.

When you turn Quick Edit on on pages where there is nothing to edit (for example: user page or empty frontpage) the white overlay is present.
But turning it off by clicking anywhere throws this error:

"TypeError: this.$editables is undefined
this.$editables.removeAttr('tabindex').removeAttr('role');"