4522d7e3ea
With this change we will check if the provided buffer number is valid, before querying its `buftype` option. This is necessary, because currently we would fail with: ``` Error executing vim.schedule lua callback: ...scope.nvim/lua/telescope/previewers/buffer_previewer.lua:473: Invalid buffer id: X ``` error, if we try to resume a jumplist picker after doing `:bwipeout`.