Improve guard so it works for no eof new line

autoload/graphql.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'graphql') == -1
+
 " Vim plugin
 " Language: GraphQL
 " Maintainer: Jon Parise <jon@indelible.org>
@@ -11,4 +12,5 @@ let g:autoloaded_graphql = 1
 function! graphql#javascript_tags() abort
   return get(g:, 'graphql_javascript_tags', ['gql', 'graphql', 'Relay.QL'])
 endfunction
+
 endif