Ignore cmdwin (#664)

* Ignore cmdwin

* Ignore / cmdwin

Author: mattn

autoload/lsp.vim

@@ -206,6 +206,7 @@ endfunction
 function! s:on_text_document_did_open() abort
     let l:buf = bufnr('%')
     if getbufvar(l:buf, '&buftype') ==# 'terminal' | return | endif
+    if getcmdwintype() !=# '' | return | endif
     call lsp#log('s:on_text_document_did_open()', l:buf, &filetype, getcwd(), lsp#utils#get_buffer_uri(l:buf))
     for l:server_name in lsp#get_whitelisted_servers(l:buf)
         call s:ensure_flush(l:buf, l:server_name, function('s:fire_lsp_buffer_enabled', [l:server_name, l:buf]))