fix typo (missing quotes when checking variable)

quezak · quezak · commit 490b8543f803 · 2017-09-21T00:24:56.000+02:00
diff --git a/syntax/javascript.vim b/syntax/javascript.vim
@@ -203,7 +203,7 @@ if exists("did_javascript_hilink")
 	HiLink javaScriptPropietaryObjects      Constant
 
 	delcommand HiLink
-	if exists(did_javascript_syn_inits)
+	if exists("did_javascript_syn_inits")
 		unlet did_javascript_syn_inits
 	endif
 	unlet did_javascript_hilink
