[associative.reqmts], [unord.req] fix typo in precondition for the me…#1080

Merged

tkoeppe merged 1 commit intocplusplus:masterfrom

Nov 20, 2016

Commits on Nov 20, 2016

[associative.reqmts], [unord.req] fix typo in precondition for the merge member function.
jensmaurer
committed