Fix failing realtime sorcery tests.

The store realtime callback needs to return a positive value for
sorcery to treat the store as a success.
........

Merged revisions 410625 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@410626 65c4cc65-6c06-0410-ace0-fbb531ad65f3