UI改进

src/org/kne/cloud/network/IPMulticastDiscovery.java

@@ -81,6 +81,7 @@ public class IPMulticastDiscovery extends Thread implements Closeable, AutoClose
 			try {
 				while (!closed) {
 					HashSet<MultipurposeSocketAddress> s = new HashSet<MultipurposeSocketAddress>();
+					synchronized (msas) {
 					for (Iterator<MultipurposeSocketAddress> iterator = msas.iterator(); iterator.hasNext();) {
 						MultipurposeSocketAddress multipurposeSocketAddress = (MultipurposeSocketAddress) iterator
 								.next();
@@ -113,6 +114,7 @@ public class IPMulticastDiscovery extends Thread implements Closeable, AutoClose
 						} catch (NoRouteToHostException|UnknownHostException e) {
 						}
 						
+					}	
 					}
 
 					Thread.sleep(timeInterval);