Set read annotations into VariableDeclaration.

Change-Id: Iaade004258cea8e01c523ed2f0f2bd0a2cfe0398
Reviewed-on: https://dart-review.googlesource.com/64922
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>

pkg/kernel/lib/binary/ast_from_binary.dart

@@ -1943,6 +1943,7 @@ class BinaryBuilder {
         var annotation = annotations[i];
         annotation.parent = node;
       }
+      node.annotations = annotations;
     }
     return node;
   }