fix(autoread): handle autocmd errors

Problem:
Any random ftplugin or other autocmd, can throw an error when
`:checktime` reloads a buffer. This causes a trace which makes it look
like an issue with `autoread.lua`.

    vim.schedule callback: …/runtime/lua/nvim/autoread.lua:146:
    FileType Autocommands for "*"..function <SNR>1_LoadFTPlugin[20] ..script
    …/runtime/ftplugin/help.lua: Vim(runtime):E5113: Lua chunk:
    …/runtime/lua/vim/treesitter.lua:216: Index out of bounds
    stack traceback:
    [C]: in function 'nvim_buf_get_text'
    …/runtime/lua/vim/treesitter.lua:216: in function 'get_node_text'
    …/runtime/lua/vim/treesitter/query.lua:558: in function 'handler'
    …/runtime/lua/vim/treesitter/query.lua:843: in function '_match_predicates'
    …/runtime/lua/vim/treesitter/query.lua:1082: in function '(for generator)'
    …/runtime/ftplugin/help.lua:91: in function 'runnables'
    …/runtime/ftplugin/help.lua:124: in main chunk
    [C]: in function 'checktime'
    …/runtime/lua/nvim/autoread.lua:146: in function <…/runtime/lua/nvim/autoread.lua:138>

Solution:
Use pcall() and surface the error via nvim_echo.

0 files changed, 0 insertions, 0 deletions