Fix cast exception when a Handle gets a wrong element because of name conflict.

pkg/analyzer/test/src/dart/analysis/driver_test.dart

Index: pkg/analyzer/test/src/dart/analysis/driver_test.dart
diff --git a/pkg/analyzer/test/src/dart/analysis/driver_test.dart b/pkg/analyzer/test/src/dart/analysis/driver_test.dart
index 800f4c5f8bc2ef36c8619d2906868c41bcfa5fe4..4f3b2afd6e9bd4786f969a30d4fa53e4f05c9490 100644
--- a/pkg/analyzer/test/src/dart/analysis/driver_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/driver_test.dart
@@ -1428,6 +1428,20 @@ var V;
     await driver.getResult(testFile);
   }
 
+  test_getResult_nameConflict_local_typeInference() async {
+    String content = r'''
+typedef F();
+var F;
+F _ff() => null;
+var f = _ff(); // the inference must fail
+main() {
+  f();
+}
+''';
+    addTestFile(content);
+    await driver.getResult(testFile);
+  }
+
   test_getResult_notDartFile() async {
     var path = _p('/test/lib/test.txt');
     provider.newFile(path, 'class A {}');