Patch: fix some bad weak reference code in CamelImapStore

[José Dapena Paz <jdapena igalia com>]

	Hi,

	This is a trivial fix for a bad weak reference code in CamelImapStore
(we add/remove a reference to the wrong object).

Changelog would be:
* libtinymail-camel/camel-lite/camel/providers/imap/camep-imap-store.c:
  Trivial fix for current folder weak reference code.

-- 
José Dapena Paz <jdapena igalia com>
Igalia