[Bug c++/64329] Crash when returning reference from lambda with deduced type

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64329

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oops, the original report was for 4.9.1, but the bug is still present in 4.9.3