Suppress "No fold found" with :silent!

Author: nickspoons

plugin/db_ui.vim

@@ -119,7 +119,7 @@ augroup dbui
   autocmd!
   autocmd BufRead,BufNewFile *.dbout set filetype=dbout
   autocmd BufReadPost *.dbout nested call db_ui#save_dbout(expand('<afile>'))
-  autocmd FileType dbout setlocal foldmethod=expr foldexpr=db_ui#dbout#foldexpr(v:lnum) | normal!zo
+  autocmd FileType dbout setlocal foldmethod=expr foldexpr=db_ui#dbout#foldexpr(v:lnum) | silent! normal!zo
   autocmd FileType dbout,dbui autocmd BufEnter,WinEnter <buffer> stopinsert
 augroup END