replace deprecated method of recursive_directory_iterator with the st… #17932

1. 
   btc-coder commented at 4:32 PM on January 15, 2020: none

   The update of boost 1.72.0 deprecated the method level() of the recursive_directory_iterator.

   See: https://www.boost.org/doc/libs/1_72_0/libs/filesystem/doc/release_history.html

   This commit fixes this by replacing the member with the standard counterpart.

2. replace deprecated method of recursive_directory_iterator with the standard counterpart 016f9bd4a1
3. btc-coder requested review from promag on Jan 15, 2020
4. btc-coder requested review from luke-jr on Jan 15, 2020
5. btc-coder requested review from petertodd on Jan 15, 2020
6. btc-coder requested review from TheBlueMatt on Jan 15, 2020
7. DrahtBot added the label Wallet on Jan 15, 2020
8. 
   hebasto commented at 8:29 PM on January 15, 2020: member

   Also #17861

9. 
   MarcoFalke commented at 8:35 PM on January 15, 2020: member

   Yeah, this does not compile on older versions of boost: https://travis-ci.org/bitcoin/bitcoin/jobs/637522459#L2780

10. 
    fanquake commented at 9:45 PM on January 15, 2020: member

    Duplicate of #17861. This has been fixed in #17654, and backported to the 0.19 branch.

11. fanquake closed this on Jan 15, 2020

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12. DrahtBot locked this on Feb 15, 2022

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