[deoptimizer] Use the correct function for handler lookup for bytecode.

test/mjsunit/compiler/regress-668760.js

Index: test/mjsunit/compiler/regress-668760.js
diff --git a/test/mjsunit/compiler/regress-668760.js b/test/mjsunit/compiler/regress-668760.js
new file mode 100644
index 0000000000000000000000000000000000000000..58294becae5f0480fac414383dccf60f0a65f578
--- /dev/null
+++ b/test/mjsunit/compiler/regress-668760.js
@@ -0,0 +1,28 @@
+// 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: --allow-natives-syntax
+
+function f() {
+  try {
+    o;
+  } catch (e) {
+    return e;
+  }
+  return 0;
+}
+
+function deopt() {
+  %DeoptimizeFunction(f);
+  throw 42;
+}
+
+%NeverOptimizeFunction(deopt);
+
+this.__defineGetter__("o", deopt );
+
+f();
+f();
+%OptimizeFunctionOnNextCall(f);
+assertEquals(42, f());