Merge pull request #3244 from bhcleek/lsp/missing

lsp: hookup noop sendMessage when gopls is missing

Author: bhcleek

autoload/go/lsp.vim

@@ -477,6 +477,7 @@ function! s:newlsp() abort
 
   let l:bin_path = go#path#CheckBinPath("gopls")
   if empty(l:bin_path)
+    let l:lsp.sendMessage = funcref('s:noop')
     return l:lsp
   endif