Add 'is_always_equal' tests for scoped_allocator. Found that I had typed '||' where I meant '&&' in the code; fixed that, too

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@238931 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed