[mdv] fix analyzer failure in select_element.dart

pkg/mdv/lib/src/select_element.dart

Index: pkg/mdv/lib/src/select_element.dart
diff --git a/pkg/mdv/lib/src/select_element.dart b/pkg/mdv/lib/src/select_element.dart
index 05b186eccd878f64db239faeeab4e3c695c01900..5ae74c8dea00ac093c973aa01ebdc1db7b82b40f 100644
--- a/pkg/mdv/lib/src/select_element.dart
+++ b/pkg/mdv/lib/src/select_element.dart
@@ -11,7 +11,7 @@ class _SelectElementExtension extends _ElementExtension {
   SelectElement get node => super.node;
 
   NodeBinding createBinding(String name, model, String path) {
-    if (name.toLowerCase() === 'selectedindex') {
+    if (name.toLowerCase() == 'selectedindex') {

[Jennifer Messerly, 2013/07/25 18:46:57]

apparently, dart2js still(!) supports ===, so actually running the
./tools/dom/dom.py tests passed...

       // TODO(rafaelw): Maybe template should remove all binding instructions.
       node.attributes.remove(name);
       return new _SelectedIndexBinding(node, model, path);