reassign 899108 to libqt5core5a, forcibly merging 884956 899108, found 884956 in 5.7.1+dfsg-3

[Sebastian Ramacher]

# third time's the charm
reassign 899108 libqt5core5a 5.9.2+dfsg-6
forcemerge 884956 899108
found 884956 5.7.1+dfsg-3
thanks