check if player is a member

Author: zefir-git

src/main/java/pro/cloudnode/smp/smpcore/listener/PlayerSlotsListener.java

@@ -7,6 +7,8 @@
 import org.jetbrains.annotations.NotNull;
 import pro.cloudnode.smp.smpcore.Member;
 
+import java.util.Optional;
+
 public final class PlayerSlotsListener implements Listener {
     /**
      * Change the max players number in server list ping
@@ -21,7 +23,9 @@ public void onServerListPing(final @NotNull ServerListPingEvent event) {
      */
     @EventHandler
     public void onPlayerLogin(final @NotNull PlayerLoginEvent event) {
-        if (event.getResult() == PlayerLoginEvent.Result.KICK_FULL)
-            event.allow();
+        if (event.getResult() == PlayerLoginEvent.Result.KICK_FULL) {
+            final @NotNull Optional<@NotNull Member> member = Member.get(event.getPlayer());
+            if (member.isPresent()) event.allow();
+        }
     }
 }