Make sure we don't crash if NewProxy returns an empty handle (only...

src/api.cc

Index: src/api.cc
===================================================================
--- src/api.cc	(revision 2498)
+++ src/api.cc	(working copy)
@@ -2480,7 +2480,7 @@
     return NULL;
   }
 
-  // Unaligned native pointer
+  // Unaligned native pointer.
   return reinterpret_cast<void*>(i::Proxy::cast(pointer)->proxy());
 }
 
@@ -2492,12 +2492,12 @@
     // Aligned pointer, store as is.
     obj->SetInternalField(index, as_object);
   } else {
-    // Currently internal fields are used by DOM wrappers which
-    // only get GCed by the mark-sweep collector,
-    // so let's put proxy into old space.
-    i::Proxy* proxy = *i::Factory::NewProxy(reinterpret_cast<i::Address>(value),
-                                            i::TENURED);
-    obj->SetInternalField(index, proxy);
+    // Currently internal fields are used by DOM wrappers which only
+    // get garbage collected by the mark-sweep collector, so we
+    // pretenure the proxy.
+    i::Handle<i::Proxy> proxy =
+        i::Factory::NewProxy(reinterpret_cast<i::Address>(value), i::TENURED);
+    if (!proxy.is_null()) obj->SetInternalField(index, *proxy);
   }
 }