After eyebrowse-close-window-config, eyebrowse-prev/next-window-config creates an extra copy of current window config

[yurikoif]

Run eyebrowse-create-window-config: Run eyebrowse-close-window-config: Run eyebrowse-next/prev-window-config: Notice that the last result should be identical to the last second, but it creates another extra window config like in the first. Emacs version: GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.30) of 2019-09-13 Eyebrowse version: eyebrowse-20190917.1653

[wasamasa]

I've debugged this a bit and noticed this only happens when both eyebrowse-wrap-around and eyebrowse-switch-back-and-forth are set:

• There is no window config after the current one to switch to
• eyebrowse-wrap-around is set, so switch to the first one
• eyebrowse-switch-back-and-forth is set, so switch to the last one
• The last one was numbered 2
• There is no such window config, so create a new one at that index (by default a duplicate of the current one)

I've added a change to both eyebrowse-next/-prev-window-config to check whether there's more than one window configuration before trying to switch to the previous/next window config.