diff --git a/[refs] b/[refs]
index effa9c985f1d..56c7409f29fd 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2d74b2c62cf8867d0762f6e6b5ed8906cb6a745f
+refs/heads/master: 1dcd81002453f9f22c6c4fd6c3c7d8f1c7c891fa
diff --git a/trunk/scripts/headerdep.pl b/trunk/scripts/headerdep.pl
index b7f6c560e24d..8dd019bc5a73 100755
--- a/trunk/scripts/headerdep.pl
+++ b/trunk/scripts/headerdep.pl
@@ -80,8 +80,7 @@ sub search {
 		my $path = "$i/$filename";
 		return $path if -f $path;
 	}
-
-	return undef;
+	return;
 }
 
 sub parse_all {