Improve guard so it works for no eof new line

syntax/kotlin.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'kotlin') == -1
+
 " Vim syntax file
 " Language: Kotlin
 " Maintainer: Alexander Udalov
@@ -111,4 +112,5 @@ hi def link ktExclExcl Special
 hi def link ktArrow Structure
 
 let b:current_syntax = 'kotlin'
+
 endif