Incorrect changes

    * ACE/ace/Thread_Adapter.cpp:
    * ACE/ace/Thread_Control.cpp:
    * ACE/ace/Thread_Manager.cpp:

Author: jwillemsen

ACE/ace/Thread_Adapter.cpp

@@ -124,7 +124,7 @@ ACE_Thread_Adapter::invoke_i ()
         ACE_OS::thr_setcanceltype (val, &old);
     }
 
-  ACE_THR_FUNC_RETURN status = nullptr;
+  ACE_THR_FUNC_RETURN status = 0;
 
   ACE_SEH_TRY
     {

ACE/ace/Thread_Control.cpp

@@ -34,7 +34,7 @@ ACE_Thread_Control::insert (ACE_Thread_Manager *tm, bool insert)
 ACE_Thread_Control::ACE_Thread_Control (ACE_Thread_Manager *t,
                                         int insert)
   : tm_ (t),
-    status_ (nullptr)
+    status_ (0)
 {
   ACE_OS_TRACE ("ACE_Thread_Control::ACE_Thread_Control");
 
@@ -73,7 +73,7 @@ ACE_Thread_Control::exit (ACE_THR_FUNC_RETURN exit_status, int do_thr_exit)
       // exit the thread after cleaning up TSS.
       ACE_OS::thr_exit (exit_status);
 #endif /* ! ACE_HAS_TSS_EMULATION */
-      return nullptr;
+      return 0;
     }
 }
 

ACE/ace/Thread_Manager.cpp

@@ -1675,7 +1675,7 @@ ACE_Thread_Manager::exit (ACE_THR_FUNC_RETURN status, bool do_thread_exit)
 
   // Just hold onto the guard while finding this thread's id and
   {
-    ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, nullptr));
+    ACE_MT (ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, 0));
 
     // Find the thread id, but don't use the cache.  It might have been
     // deleted already.
@@ -1701,7 +1701,7 @@ ACE_Thread_Manager::exit (ACE_THR_FUNC_RETURN status, bool do_thread_exit)
       // storage this call can return (don't ask...).
     }
 
-  return nullptr;
+  return 0;
 }
 
 // Wait for all the threads to exit.