spamming error when in command-line-window

[Jon]

When an image is displayed and one opens the [Command Line] history (with q:) image.nvim throws a huge amount of errors until the command-line-window is closed.

It seems that the original error is this (which appears with some actions in the command-line-window):

In order to avoid the problem I think it would be enough to check getcmdwintype() and prevent issuing whatever is triggering the error when getcmdwintype()!=''. I'll try to submit a PR if it works :)