attempt to index local 'selection' when creating new worktree with Telescope

[lgoudin]

Steps to reproduce :

• Run :lua require("telescope").extensions.git_worktree.git_worktrees()
• Press enter
• Type a remote branch name or anything so that there is no suggestion left in the list
• Press enter

The full error :

E5108: Error executing lua: ...worktree.nvim/lua/telescope/_extensions/git_worktree.lua:17: attempt to index local 'selection' (a nil value)
stack traceback:
        ...worktree.nvim/lua/telescope/_extensions/git_worktree.lua:17: in function 'get_worktree_path'
        ...worktree.nvim/lua/telescope/_extensions/git_worktree.lua:21: in function 'run_replace_or_original'
        ...packer/start/telescope.nvim/lua/telescope/actions/mt.lua:65: in function 'run_replace_or_original'
        ...packer/start/telescope.nvim/lua/telescope/actions/mt.lua:65: in function 'key_func'
        ...k/packer/start/telescope.nvim/lua/telescope/mappings.lua:253: in function <...k/packer/start/telescope.nvim/lua/telescope/mappings.lua:252>