Fix from Paul Lind that helps post-isolates V8 work with older

src/api.cc

Index: src/api.cc
===================================================================
--- src/api.cc	(revision 9686)
+++ src/api.cc	(working copy)
@@ -4005,7 +4005,7 @@
 bool v8::V8::IdleNotification() {
   // Returning true tells the caller that it need not
   // continue to call IdleNotification.
-  if (!i::Isolate::Current()->IsInitialized()) return true;
+  if (!isolate || !i::Isolate::Current()->IsInitialized()) return true;

[Rico, 2011/10/19 07:45:18]

Do we have an isolate pointer here? Don't we need to add something like
i::Isolate* isolate = i::Isolate::Current();
above?
Actually, judging from Issue 1780 this check seems to be placed in the wrong
method, it should be in the method below (LowMemoryNotification), but I think it
would be nice to have it in both.

   return i::V8::IdleNotification();
 }