fixed concurrency bug

src/main/java/teetime/util/framework/concurrent/SignalingCounter.java

@@ -53,8 +53,9 @@ public class SignalingCounter {
 		}
 
 		final Object cond = conditions.get(number);
-		while (counter != number) {
-			synchronized (cond) {
+
+		synchronized (cond) { // counter must be wrapped by synchronized to get the latest value
+			while (counter != number) {
 				cond.wait();
 			}
 		}