Bug fix: handleLLDP() method uses incorrect port variable when getting the...

Bug fix: handleLLDP() method uses incorrect port variable when getting the state of the packet-in port.

src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkDiscoveryManager.java

@@ -519,7 +519,7 @@ public class LinkDiscoveryManager
 
         OFPhysicalPort physicalPort = remoteSwitch.getPort(remotePort);
         int srcPortState = (physicalPort != null) ? physicalPort.getState() : 0;
-        physicalPort = sw.getPort(remotePort);
+        physicalPort = sw.getPort(pi.getInPort());
         int dstPortState = (physicalPort != null) ? physicalPort.getState() : 0;
 
         // Store the time of update to this link, and push it out to routingEngine