made thread ids unsigned again, to avoid negative thread ids on some systems

src/charon/threads/receiver.c

@@ -74,7 +74,7 @@ static void receive_packets(private_receiver_t * this)
 	/* cancellation disabled by default */
 	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
 	
-	this->logger->log(this->logger, CONTROL, "receiver thread running,  thread_ID: %06d", (int)pthread_self());
+	this->logger->log(this->logger, CONTROL, "receiver thread running,  thread_ID: %06u", (int)pthread_self());
 	
 	while (1)
 	{

src/charon/threads/scheduler.c

@@ -72,7 +72,7 @@ static void get_events(private_scheduler_t * this)
 	/* cancellation disabled by default */
 	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
 	
-	this->logger->log(this->logger, CONTROL, "scheduler thread running, thread_ID: %06d", (int)pthread_self());
+	this->logger->log(this->logger, CONTROL, "scheduler thread running, thread_ID: %06u", (int)pthread_self());
 
 	for (;;)
 	{

src/charon/threads/sender.c

@@ -73,7 +73,7 @@ static void send_packets(private_sender_t * this)
 	/* cancellation disabled by default */
 	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
 
-	this->logger->log(this->logger, CONTROL, "sender thread running,    thread_ID: %06d", (int)pthread_self());
+	this->logger->log(this->logger, CONTROL, "sender thread running,    thread_ID: %06u", (int)pthread_self());
 
 	while (1)
 	{

src/charon/threads/thread_pool.c

@@ -75,7 +75,7 @@ static void process_jobs(private_thread_pool_t *this)
 	/* cancellation disabled by default */
 	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
 	
-	this->worker_logger->log(this->worker_logger, CONTROL, "worker thread running,    thread_ID: %06d", (int)pthread_self());
+	this->worker_logger->log(this->worker_logger, CONTROL, "worker thread running,    thread_ID: %06u", (int)pthread_self());
 	
 	while (TRUE)
 	{