Support local variables in analyzer2dart.

pkg/analyzer2dart/test/end2end_test.dart

Index: pkg/analyzer2dart/test/end2end_test.dart
diff --git a/pkg/analyzer2dart/test/end2end_test.dart b/pkg/analyzer2dart/test/end2end_test.dart
index 52055e4a4cbdd68dcf0721758db0175e922d7b31..11e9691d25bd3d99ed7addc1ddca3dd20a9b5fce 100644
--- a/pkg/analyzer2dart/test/end2end_test.dart
+++ b/pkg/analyzer2dart/test/end2end_test.dart
@@ -176,6 +176,28 @@ main(args) {
 }
 ''');
   });
+
+  test('Local variables', () {
+    checkResult('''
+main() {
+  var a;
+  return a;
+}
+''', '''
+main() {}
+''');
+
+    checkResult('''
+main() {
+  var a = 0;
+  return a;
+}
+''', '''
+main() {
+  return 0;
+}
+''');
+  });
 }
 
 checkResult(String input, [String expectedOutput]) {