HOTFIX: hotfixed show-stopping bug

Server/src/main/java/uulm/teamname/marvelous/server/lobbymanager/LobbyConnection.java

@@ -49,7 +49,7 @@ public class LobbyConnection implements Runnable {
     }
 
     public void addParticipant(Participant participant) {
-        if (this.state == LobbyConnectionState.Started || this.player1.state == ParticipantState.Playing) {
+        if (this.state == LobbyConnectionState.Started) {
             Logger.trace("Set client state to playing");
             participant.getClient().state = ClientState.Playing;
             participant.state = ParticipantState.Playing;