[fzf#vim#grep] Go to the correct column by using cursor function instead of |

Ceci n'est pas une pipe.

Fix #1173
Fix #1174

autoload/fzf/vim.vim

@@ -741,7 +741,7 @@ function! s:ag_handler(lines, has_column)
     call s:open(cmd, first.filename)
     execute first.lnum
     if a:has_column
-      execute 'normal!' first.col.'|'
+      call cursor(0, first.col)
     endif
     normal! zz
   catch