[turbofan] Fix usage of ThisFunction parameter in OSR.

test/mjsunit/compiler/osr-function.js

+// Copyright 2015 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: --use-osr --turbo-osr
+
+function foo() {
+  var sum = 0;
+  for (var i = 0; i < 100000; i++) {
+    sum += i;
+  }
+  return function() { return sum; }
+}
+
+assertEquals(4999950000, foo()());
+assertEquals(4999950000, foo()());
+assertEquals(4999950000, foo()());
+
+function bar() {
+  var sum = 0;
+  var ret = 0;
+  for (var i = 0; i < 90000; i++) {
+    sum += i;
+    ret = function() { return sum; }
+  }
+  return ret;
+}
+
+assertEquals(4049955000, bar()());
+assertEquals(4049955000, bar()());
+assertEquals(4049955000, bar()());