[turbofan] Fix OSR environment in for-in.

test/mjsunit/compiler/regress-607493.js

Index: test/mjsunit/compiler/regress-607493.js
diff --git a/test/message/syntactic-tail-call-in-try-try-catch-finally.js b/test/mjsunit/compiler/regress-607493.js
similarity index 58%
copy from test/message/syntactic-tail-call-in-try-try-catch-finally.js
copy to test/mjsunit/compiler/regress-607493.js
index 202f4cc2bb4f369993ec235f6eb07f0229ac019c..40cad64f66c4f5f13f301ca78f8fa0e0543c35be 100644
--- a/test/message/syntactic-tail-call-in-try-try-catch-finally.js
+++ b/test/mjsunit/compiler/regress-607493.js
@@ -2,20 +2,19 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-explicit-tailcalls
+// Flags: --allow-natives-syntax
 
-function f() {
-  return 1;
-}
+var a = [1];
 
 function g() {
-  try {
+  for (var x in a) {
     try {
-      f();
+      for (var i = 0; i < 10; i++) { %OptimizeOsr(); }
+      return;
     } catch(e) {
-      return continue f();
+      continue;
     }
-  } finally {
-    f();
   }
 }
+
+g();