Wladimir J. van der Laan 88af227687 test: Make sure wallet.backup is created in temp path
This assures that we don't overwrite a random file called
`wallet.backup` that happens to be in the current directory. It also
assures that the temporary file will be cleaned up.

Noticed by Evan Klitzke, came up in discussion here:
https://github.com/bitcoin/bitcoin/pull/10880#discussion_r128460722
2017-07-25 14:44:19 +02:00
..