Fix leak of a global handle in Debug::Load().

Bootstrapper::CreateEnvironment() returns a global handle to the created context so there is no need to create another one explicitly.

BUG=v8:1006

Review URL: http://codereview.chromium.org/6048003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6092 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/debug.cc

@@ -858,7 +858,7 @@ bool Debug::Load() {
   if (caught_exception) return false;
 
   // Debugger loaded.
-  debug_context_ = Handle<Context>::cast(GlobalHandles::Create(*context));
+  debug_context_ = context;
 
   return true;
 }