🐛 Context API, ensure rented buffers are marked as such

Author: andersstorhaug

Lite3DotNet/Lite3Context.cs

@@ -111,11 +111,11 @@ public void Dispose()
             ArrayPool<byte>.Shared.Return(Buffer);
     }
 
-    internal Lite3Core.Status Grow()
+    private Lite3Core.Status Grow()
     {
         var status = Lite3Buffer.Grow(_arrayPool, _isRentedBuffer, Buffer, out Buffer);
-
-        _isRentedBuffer = true;
+        
+        _isRentedBuffer = status == Lite3Core.Status.GrewBuffer;
 
         return status;
     }