Merge #10795: No longer ever reuse keypool indexes
1fc8c3d No longer ever reuse keypool indexes (Matt Corallo)
Pull request description:
This fixes an issue where you could reserve a keypool entry, then
top up the keypool, writing out a new key at the given index, then
return they key from the pool. This isnt likely to cause issues,
but given there is no reason to ever re-use keypool indexes
(they're 64 bits...), best to avoid it alltogether.
Builds on #10235, should probably get a 15 tag.
Tree-SHA512: c13a18a90f1076fb74307f2d64e9d80149811524c6bda259698ff2c65adaf8c6c3f2a3a07a5f4bf03251bc942ba8f5fd33a4427aa4256748c40b062991682caf