JAVA-2778: Release binding after retrying a change stream operation

Author: jyemin

driver-core/src/main/com/mongodb/operation/AsyncChangeStreamBatchCursor.java

@@ -124,6 +124,7 @@ public void onResult(final AsyncBatchCursor<T> result, final Throwable t) {
                     callback.onResult(null, t);
                 } else {
                     wrapped = ((AsyncChangeStreamBatchCursor<T>) result).getWrapped();
+                    binding.release(); // release the new change stream batch cursor's reference to the binding
                     asyncBlock.apply(wrapped, callback);
                 }
             }

driver-core/src/main/com/mongodb/operation/ChangeStreamBatchCursor.java

@@ -138,6 +138,7 @@ <R> R resumeableOperation(final Function<BatchCursor<RawBsonDocument>, R> functi
         }
         wrapped.close();
         wrapped = ((ChangeStreamBatchCursor<T>) changeStreamOperation.resumeAfter(resumeToken).execute(binding)).getWrapped();
+        binding.release(); // release the new change stream batch cursor's reference to the binding
         return function.apply(wrapped);
     }