pidgin/pidgin

Make PurpleHistoryManager a final type

2021-10-20, Gary Kramlich
e19c9f9c79fc
Make PurpleHistoryManager a final type

Testing Done:
Ran the unit tests and sent a message and made sure it ended up in the database.

Reviewed at https://reviews.imfreedom.org/r/1083/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in