try again to prevent IllegalStateException on Java 5

router/java/src/net/i2p/router/transport/udp/EstablishmentManager.java

@@ -613,7 +613,9 @@ class EstablishmentManager {
             // java 5 IllegalStateException here
             try {
                 iter.remove();
-            } catch (IllegalStateException ise) {}
+            } catch (IllegalStateException ise) {
+                continue;
+            }
             RemoteHostId to = entry.getKey();
             List<OutNetMessage> allQueued = entry.getValue();
             List<OutNetMessage> queued = new ArrayList();