Improve guard so it works for no eof new line

indent/elixir.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'elixir') == -1
+
 if exists("b:did_indent")
   finish
 end
@@ -14,4 +15,5 @@ setlocal indentkeys+=*<Return>,=->,=\|>,=<>,0},0],0)
 function! elixir#indent(lnum)
   return elixir#indent#indent(a:lnum)
 endfunction
+
 endif