Merge branch 'os/gitweb-highlight-uncaptured'

The code to sanitize control characters before passing it to
"highlight" filter lost known-to-be-safe control characters by
mistake.

* os/gitweb-highlight-uncaptured:
  gitweb: fix error in sanitize when highlight is enabled

gitweb/gitweb.perl

@@ -1556,7 +1556,7 @@ sub sanitize {
 	return undef unless defined $str;
 
 	$str = to_utf8($str);
-	$str =~ s|([[:cntrl:]])|($1 =~ /[\t\n\r]/ ? $1 : quot_cec($1))|eg;
+	$str =~ s|([[:cntrl:]])|(index("\t\n\r", $1) != -1 ? $1 : quot_cec($1))|eg;
 	return $str;
 }