Clang warning in unique_resource

[Pesa]

This is reproducible with various versions of clang.

.../nonstd/scope-lite.hpp:909:33: warning: cannot refer to a non-static member from the handler of a constructor function try block [-Wexceptions]
            other.get_deleter()(get());
                                ^
1 warning generated.

[martinmoene]

Thanks Davide, will be a few weeks until I'm able to work on this & other issue(s) as I'm currently on holidays.

[Pesa]

I tested as of commit 203cce7 and the warning is gone. Thanks!