Fix infer_instance_accessor_ref test

pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect

Index: pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect
index b1e108c6020bff5551162e2a55cd0812733be9a4..1a3ee8a286ab3db5fe80cdedca19886b62076c2e 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect
@@ -14,7 +14,7 @@ class B extends core::Object {
     ;
   get c() → self::C
     return null;
-  method set(self::C value) → void {}
+  set c(self::C value) → void {}
 }
 class C extends core::Object {
   constructor •() → void
@@ -28,5 +28,5 @@ class D extends self::C {
 }
 static field self::A a = new self::A::•();
 static field self::C x = self::a.{self::A::b}.{self::B::c};
-static field dynamic y = let final dynamic #t1 = self::a.{self::A::b} in let final dynamic #t2 = #t1.{self::B::c} in #t2.==(null) ? #t1.c = new self::D::•() : #t2;
+static field self::C y = let final dynamic #t1 = self::a.{self::A::b} in let final dynamic #t2 = #t1.{self::B::c} in #t2.{core::Object::==}(null) ? #t1.{self::B::c} = new self::D::•() : #t2;
 static method main() → dynamic {}