Always include add_reference in iterator_adaptor.

It's only included for certain configurations but is always used. This
didn't matter in the past because it was transitively included by
is_convertible. But it isn't now on Visual C++ because its itsintrinsic
version is being used, which doesn't require add_reference.

[SVN r69855]
This commit is contained in:
Daniel James 2011-03-11 18:28:31 +00:00
parent bd5c4af128
commit 778d3918ac

@ -1 +1 @@
Subproject commit caa0e5035ae4e89fe4e26ad9f287e8ac3848382e
Subproject commit 5c477dc6955fadb496e73bdae5c561dd59e97f8f