Fix invalid location in inline super constructor.

tests/compiler/dart2js_extra/source_mapping_crash_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#source('inline_position_crash_source.dart');
+#source('source_mapping_crash_source.dart');
 
 class Sub extends Super {
-  Sub() : super();
+  Sub(var x) : super(x.y);
 }
 
+class X { var y; }
+
 main() {
-  new Sub();
+  new Sub(new X());
 }