Improve guard so it works for no eof new line

after/syntax/mma.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'mathematica') == -1
+
 "Vim conceal file
 " Language: Mathematica
 " Maintainer:   Voldikss <dyzplus@gmail.com>
@@ -1445,4 +1446,5 @@ endif
 hi! link Conceal Normal
 setlocal conceallevel=2
 
+
 endif