Immediately dot-repeating change{leap}<enter> throws error in some cases

[Trildar]

Neovim version: 0.8.3
leap.nvim commit: 0eb3611

Trying to do a dot-repeat immediately after a change operation with a leap motion at the beginning of a buffer, i.e. csab<CR><ESC>, causes Neovim to enter what looks like an operator pending mode. No keys work after that, except returning to Insert mode and causing an E5108: Error executing lua: attempt to call a number value error. Undoing or moving the cursor first seems to make it work as expected.

Side note: dot-repeat with leap in vscode-neovim shows similar behaviour, under any conditions.

[ggandor]

The error seems to be thrown when you are on the last line of the buffer. As I checked, Leap is not even called in that case, so the problem might be external.

[ggandor]

csxx<enter><esc>. also throws this error. I don't really see the pattern yet.

  xxfoo
  foo 

[ggandor]

By the way, ideally we should prevent executing the change in the first place if no target has been found.

#50