Create parent directories if needed in GetDataDir
Create parent directories if needed in GetDataDir

One-line change. Fixes #2752.

saydulk/Feathercoin,nanocoins/mycoin,saydulk/Feathercoin,saydulk/Feathercoin,cqtenq/Feathercoin,cqtenq/Feathercoin,cinnamoncoin/Feathercoin,ghostlander/Feathercoin,nanocoins/mycoin,enlighter/Feathercoin,cinnamoncoin/Feathercoin,ghostlander/Feathercoin,cqtenq/Feathercoin,ghostlander/Feathercoin,cinnamoncoin/Feathercoin,saydulk/Feathercoin,cinnamoncoin/Feathercoin,enlighter/Feathercoin,enlighter/Feathercoin,enlighter/Feathercoin,saydulk/Feathercoin,ghostlander/Feathercoin,enlighter/Feathercoin,cqtenq/Feathercoin,nanocoins/mycoin,nanocoins/mycoin,cinnamoncoin/Feathercoin,cqtenq/Feathercoin,ghostlander/Feathercoin,nanocoins/mycoin