fix: Fixed WeakReference object alive checking

Author: TwoTenPvP

MLAPI/Serialization/Pooled/BitStreamPool.cs

@@ -22,9 +22,14 @@ public static PooledBitStream GetStream()
             if (overflowStreams.Count > 0)
             {
                 if (LogHelper.CurrentLogLevel <= LogLevel.Developer) LogHelper.LogInfo("Retrieving PooledBitStream from overflow pool. Recent burst?");
-                WeakReference weakStream = null;
-                while (overflowStreams.Count > 0 && ((weakStream = overflowStreams.Dequeue()) == null || !weakStream.IsAlive)) ;
-                if (weakStream.IsAlive) return (PooledBitStream)weakStream.Target;
+
+                object weakStream = null;
+                while (overflowStreams.Count > 0 && ((weakStream = overflowStreams.Dequeue().Target) == null)) ;
+
+                if (weakStream != null)
+                {
+                    return (PooledBitStream)weakStream;
+                }
             }
 
             if (streams.Count == 0)

MLAPI/Transports/UNET/UnetTransport.cs

@@ -66,9 +66,10 @@ public override void Send(ulong clientId, ArraySegment<byte> data, string channe
                 }
                 else
                 {
-                    if (temporaryBufferReference != null && temporaryBufferReference.IsAlive && ((byte[]) temporaryBufferReference.Target).Length >= data.Count)
+                    object bufferRef = null;
+                    if (temporaryBufferReference != null && ((bufferRef = temporaryBufferReference.Target) != null) && ((byte[])bufferRef).Length >= data.Count)
                     {
-                        buffer = (byte[])temporaryBufferReference.Target;
+                        buffer = (byte[])bufferRef;
                     }
                     else
                     {