pidgin/pidgin

Remove the account parameter from purple_credential_provider_*_finish functions.

Testing Done:
Compiled and make sure the unit tests passed.

Reviewed at https://reviews.imfreedom.org/r/305/
REVIEWBOARD_URL = "https://reviews.imfreedom.org/"
REPOSITORY = "pidgin/pidgin"
REPOSITORY_TYPE = "mercurial"
BRANCH = "default"
LAND_DEST_BRANCH = "default"
LAND_PUSH = False