Bug#1109030: python3-debian: Release.copy() fails trying to split multivalued fields that have already been split

[Stuart Prescott]

Control: tags -1 + patch

https://salsa.debian.org/python-debian-team/python-debian/-/merge_requests/157

-- 
Stuart Prescott   http://www.nanonanonano.net/ stuart at nanonanonano.net
Debian Developer  http://www.debian.org/       stuart at debian.org
GPG fingerprint   90E2 D2C1 AD14 6A1B 7EBB 891D BBC1 7EBB 1396 F2F7