Improve guard so it works for no eof new line

syntax/mason.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'perl') == -1
+
 " Vim syntax file
 " Language:     Mason (Perl embedded in HTML)
 " Maintainer:   vim-perl <vim-perl@googlegroups.com>
@@ -82,4 +83,5 @@ let b:current_syntax = "mason"
 if main_syntax == 'mason'
 	unlet main_syntax
 endif
+
 endif