"Insert Guest Additions CD image..." should not have trailing "..."

[m6477]

I'm running VirtualBox-5.0.13-104829-Win on Windows 7 Pro SP1 x64.

In the virtual machine window's menu (when the VM is not running full screen), or the mini-toolbar (when VM is full screen), the Devices menu includes an item "Insert Guest Additions CD image...". The trailing "..." is probably incorrect. So far as I can tell there is no subsequent dialog - the virtual CD is inserted without further response from the user.

(The guest machine itself may then present a prompt if, for example, Windows AutoPlay is enabled, but that's not the host's concern.)