7b5868266a
Since fb08d477eb7bf5e678b9cd99b44a435842a7dfbf was merged, storlets invocation on proxy fails because the close method is called even if iterator has list_iterator type which doesn't have the close method. This change replaces the direct call of the close method by close_if_possible, to avoid Exception if the response iterator is list or tuple, which don't support the close method. Change-Id: I851cbb17465b5693dda5206aeae0a3191c9fe4f4 Closes-Bug: #1901453