[libc++] Revert a use of `static_cast` for `_VSTD::forward`. NFCI.
authorArthur O'Dwyer <arthur.j.odwyer@gmail.com>
Wed, 25 Aug 2021 23:40:03 +0000 (19:40 -0400)
committerArthur O'Dwyer <arthur.j.odwyer@gmail.com>
Thu, 26 Aug 2021 15:35:07 +0000 (11:35 -0400)
commit15acca5ccde4f88e6073ebf773ce631617b55946
tree95a9e9faebc3603c9e4bc782c7e91b84d7215d74
parentd383df32c0d5bcdc8c160ecdd7174399aa3c5395
[libc++] Revert a use of `static_cast` for `_VSTD::forward`. NFCI.

As requested in D107584.

Differential Revision: https://reviews.llvm.org/D108743
libcxx/include/__concepts/boolean_testable.h