Don't treat catch scopes as possibly-shadowing for sloppy eval

test/mjsunit/regress/regress-crbug-608279.js

Index: test/mjsunit/regress/regress-crbug-608279.js
diff --git a/test/mjsunit/regress/regress-crbug-608279.js b/test/mjsunit/regress/regress-crbug-608279.js
new file mode 100644
index 0000000000000000000000000000000000000000..22c69f252d0c37389dd441bad6bf8814e30dd7e4
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-608279.js
@@ -0,0 +1,18 @@
+// Copyright 2016 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: --always-opt --no-lazy
+
+function __f_38() {
+  try {
+    throw 0;
+  } catch (e) {
+    eval();
+    var __v_38 = { a: 'hest' };
+    __v_38.m = function () { return __v_38.a; };
+  }
+  return __v_38;
+}
+var __v_40 = __f_38();
+__v_40.m();