* i2psnark: Clear PEX peers set after use, cause of bad peer counts

apps/i2psnark/java/src/org/klomp/snark/PeerCoordinator.java

@@ -1439,6 +1439,7 @@ class PeerCoordinator implements PeerListener
 
   /**
    *  Called by TrackerClient
+   *  @return the Set itself, modifiable, not a copy, caller should clear()
    *  @since 0.8.4
    */
   Set<PeerID> getPEXPeers() {

apps/i2psnark/java/src/org/klomp/snark/TrackerClient.java

@@ -560,6 +560,7 @@ public class TrackerClient implements Runnable {
                          }
                     }
                     rv = pids.size();
+                    pids.clear();
                 }
             } else {
                 if (_log.shouldLog(Log.INFO))