Remove invalid assertion.

runtime/vm/message_handler.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/message_handler.h"
 
 #include "vm/dart.h"
 #include "vm/lockers.h"
 #include "vm/os.h"
 #include "vm/port.h"
@@ skipping 302 matching lines @@
       if (FLAG_trace_isolates) {
         OS::Print("[-] Stopping message handler (%s):\n"
                   "\thandler:    %s\n",
                   (ok ? "no live ports" : "error"),
                   name());
       }
       pool_ = NULL;
       run_end_callback = true;
     }
 
-    // Clear the task_ last.  We don't want any other tasks to start up
-    // until we are done with all messages and pause notifications.
+    // Clear the task_ last.  This allows other tasks to potentially start
+    // for this message handler.
     ASSERT(oob_queue_->IsEmpty());
-    ASSERT(!ok || queue_->IsEmpty());
     task_ = NULL;
   }
   if (run_end_callback && end_callback_ != NULL) {
     end_callback_(callback_data_);
     // The handler may have been deleted after this point.
   }
 }
 
 
 void MessageHandler::ClosePort(Dart_Port port) {
@@ skipping 66 matching lines @@
 
 
 void MessageHandler::AcquireQueues(AcquiredQueues* acquired_queues) {
   ASSERT(acquired_queues != NULL);
   // No double dipping.
   ASSERT(acquired_queues->handler_ == NULL);
   acquired_queues->Reset(this);
 }
 
 }  // namespace dart