Fix for:
 http://bugzilla.dre.vanderbilt.edu/show_bug.cgi?id=4165
--- ACE_wrappers/ace/Dev_Poll_Reactor.cpp.orig	2014-05-05 15:51:23.191210081 -0400
+++ ACE_wrappers/ace/Dev_Poll_Reactor.cpp	2014-05-05 15:55:31.017268216 -0400
@@ -1958,6 +1958,8 @@
 {
   ACE_TRACE ("ACE_Dev_Poll_Reactor::cancel_timer");
 
+  ACE_MT (ACE_GUARD_RETURN (ACE_Dev_Poll_Reactor_Token, mon, this->token_, -1));
+
   // Don't bother waking the poll - the worse that will happen is it will
   // wake up for a timer that doesn't exist then go back to waiting.
   return (this->timer_queue_ == 0
@@ -1973,6 +1975,8 @@
 {
   ACE_TRACE ("ACE_Dev_Poll_Reactor::cancel_timer");
 
+  ACE_MT (ACE_GUARD_RETURN (ACE_Dev_Poll_Reactor_Token, mon, this->token_, -1));
+
   // Don't bother waking the poll - the worse that will happen is it will
   // wake up for a timer that doesn't exist then go back to waiting.
   return (this->timer_queue_ == 0