lib-storage: Avoid assert-crashing with non-mUTF7/UTF8 entries in subscriptions file.
lib-storage: Avoid assert-crashing with non-mUTF7/UTF8 entries in subscriptions file.

Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot