[Bug libstdc++/60710] experimental::optional is using T::operator!=

[larsbj at gullik dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60710

Lars Gullik Bjønnes <larsbj at gullik dot net> changed:

           What    |Removed                     |Added
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                 CC|                            |larsbj at gullik dot net

--- Comment #1 from Lars Gullik Bjønnes <larsbj at gullik dot net> ---
Created attachment 32486
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32486&action=edit
replace != with !( == ) in optional<T>::operator!=