Fixed a bug that messages in queue won't be sent to switch when queue is resumed.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java
index cd41c04..3340ed0 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowprogrammer/FlowPusher.java
@@ -324,6 +324,13 @@
 		synchronized (queue) {
 			if (queue.state == QueueState.SUSPENDED) {
 				queue.state = QueueState.READY;
+				
+				// Latch down if queue is not empty
+				FlowPusherThread thread = getProcess(sw);
+				if (! queue.isEmpty() &&
+						thread.mutex.availablePermits() == 0) {
+					thread.mutex.release();
+				}
 				return true;
 			}
 			return false;