A couple more fixes.

identd/src/com/dmdirc/addons/identd/IdentClient.java

 import com.dmdirc.events.UserErrorEvent;
 import com.dmdirc.interfaces.Connection;
 import com.dmdirc.interfaces.ConnectionManager;
+import com.dmdirc.interfaces.User;
 import com.dmdirc.interfaces.config.AggregateConfigProvider;
 import com.dmdirc.interfaces.config.ReadOnlyConfigProvider;
 import com.dmdirc.logger.ErrorLevel;
                 != null && !customName.isEmpty() && customName.length() < 513) {
             username = customName;
         } else if (connection != null && config.getOptionBool(domain, "general.useNickname")) {
-            username = connection.getLocalUser().getNickname();
+            username = connection.getLocalUser().map(User::getNickname).orElse("Unknown");
         } else if (connection != null && config.getOptionBool(domain, "general.useUsername")) {
-            username = connection.getLocalUser().getUsername().orElse(System.getProperty("user.name"));
+            username = connection.getLocalUser().flatMap(User::getUsername).orElse("Unknown");
         } else {
             username = System.getProperty("user.name");
         }

identd/test/com/dmdirc/addons/identd/IdentClientTest.java

 
         when(sm.getConnections()).thenReturn(servers);
         when(connection.getParser()).thenReturn(Optional.of(parser));
-        when(connection.getLocalUser()).thenReturn(user);
+        when(connection.getLocalUser()).thenReturn(Optional.of(user));
         when(parser.getLocalPort()).thenReturn(60);
         when(parser.getLocalClient()).thenReturn(client);
         when(client.getNickname()).thenReturn("nickname");