Properly update membercount for reloaded members

Since q->membercount is set to 0 before reloading, it is important
to increment it again for reloaded members as well as added.

(closes issue AST-676)

Review: https://reviewboard.asterisk.org/r/1541/
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Merged revisions 342380 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 342381 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@342382 65c4cc65-6c06-0410-ace0-fbb531ad65f3