remove waiting semaphore for marking offline when disposing

MareSynchronos/PlayerData/Pairs/Pair.cs

@@ -185,11 +185,12 @@ public class Pair
         return UserPair.Groups.Any() || UserPair.IndividualPairStatus != IndividualPairStatus.None;
     }
 
-    public void MarkOffline()
+    public void MarkOffline(bool wait = true)
     {
         try
         {
-            _creationSemaphore.Wait();
+            if (wait)
+                _creationSemaphore.Wait();
             LastReceivedCharacterData = null;
             var player = CachedPlayer;
             CachedPlayer = null;
@@ -198,7 +199,8 @@ public class Pair
         }
         finally
         {
-            _creationSemaphore.Release();
+            if (wait)
+                _creationSemaphore.Release();
         }
     }
 

MareSynchronos/PlayerData/Pairs/PairManager.cs

@@ -356,7 +356,7 @@ public sealed class PairManager : DisposableMediatorSubscriberBase
         Logger.LogDebug("Disposing all Pairs");
         Parallel.ForEach(_allClientPairs, item =>
         {
-            item.Value.MarkOffline();
+            item.Value.MarkOffline(wait: false);
         });
 
         RecreateLazy();