Handle null receiver in sloppy mode in %GetFrameDetails.

test/mjsunit/regress/regress-crbug-405922.js

Index: test/mjsunit/regress/regress-crbug-405922.js
diff --git a/test/mjsunit/regress/regress-crbug-405922.js b/test/mjsunit/regress/regress-crbug-405922.js
new file mode 100644
index 0000000000000000000000000000000000000000..9f76a862dbef5a257ab287737652f59c503fbdd1
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-405922.js
@@ -0,0 +1,27 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --expose-debug-as debug
+
+Debug = debug.Debug
+
+function listener(event, exec_state, event_data, data) {
+  try {
+    if (event == Debug.DebugEvent.Break) {
+      exec_state.prepareStep(Debug.StepAction.StepIn, 3);
+    }
+  } catch (e) {
+  }
+}
+
+Debug.setListener(listener);
+
+function f(x) {
+  if (x > 0) %_CallFunction(null, x-1, f);
+}
+
+debugger;
+f(2);
+
+Debug.setListener(null);