[Bug libstdc++/77322] [C++11] std::function::swap should be noexcept.

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77322

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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   Target Milestone|---                         |6.3

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 5.5 and 6.3 too