Improve guard so it works for no eof new line

after/syntax/yaml.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'yaml') == -1
+
 " To make this file do stuff, add something like the following (without the
 " leading ") to your ~/.vimrc:
 " au BufNewFile,BufRead *.yaml,*.yml so ~/src/PyYaml/YAML.vim
@@ -60,4 +61,5 @@ hi link yamlInline	Operator
 hi link yamlBlock	Operator
 hi link yamlString	String
 hi link yamlEscape	Special
+
 endif