dont take (and keep) the lock in the destructor because on POSIX its not allowed to own a mutex when it is destroyed

src/libCom/timer/timerQueue.cpp

@@ -30,7 +30,6 @@ timerQueue::timerQueue ( epicsTimerQueueNotify &notifyIn ) :
 timerQueue::~timerQueue ()
 {
     timer *pTmr;
-    this->mutex.lock ();
     while ( ( pTmr = this->timerList.get () ) ) {    
         pTmr->curState = timer::stateLimbo;
     }