Asher Mancinelli 34538dba9b [libc++] Make shared_ptr move unique_ptr's deleter
Addresses LWG 3548 which mandates that when shared_ptr is being constructed from a unique_ptr, the unique_ptr's deleter should be moved and not copied.

Reviewed By: #libc, philnik, EricWF

Differential Revision: https://reviews.llvm.org/D119159
2022-03-18 11:50:31 -06:00
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