Martin Brennan c841e34b62
FIX: Check if bookmarkable column exists before adding (#16497)
Because in 8040b95e8c4abeab1ab9fe50826f92c52995a814 we removed
a previous post migrate file, some people may not have had those
original polymorphic bookmark columns removed, and the migration
from this PR running will cause duplicate column errors.

cf. https://meta.discourse.org/t/duplicatecolumn-and-multisite-migrate-failed/224480
2022-04-19 12:01:18 +10:00
..