tree a4ca9e6d25ae31f940c802ae0adf12972facb87f
parent 0ef0a7622b7ecda938d71337fc1d901460fb9fa0
author Chandler Carruth <chandlerc@gmail.com> 1556255073 +0000
committer Chandler Carruth <chandlerc@gmail.com> 1556255073 +0000

Fix r359229 which tried to fix r359159...

When r359229 added noexcept to the declaration of `~mutex`, it didn't
add it to the definition which caused -Wimplicit-exception-spec-mismatch
to fire. This just adapts the definition to agree with the declaration.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@359275 91177308-0d34-0410-b5e6-96231b3b80d8