res_rtp_asterisk: Fix checklist creating problems in ICE sessions

Prior to this patch, local candidate lists including SRFLX would fail to start
properly when building ICE candidate check lists. This patch fixes that problem
by making sure that each SRFLX candidate is associated with the proper
base address so that the check list can create matches properly.
This patch was written by jcolp. The issue will be left open to await testing
by the issue participants.

(issue ASTERISK-23213)
Reported by: Andrea Suisani
Review: https://reviewboard.asterisk.org/r/3256/




git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/11@409129 f38db490-d61c-443f-a65b-d21fe96a405b
res_rtp_asterisk: correct build error from r409129

Accidentally placed a declaration below functional code

(issue ASTERISK-23213)
Reported by: Andrea Suisani
Review: https://reviewboard.asterisk.org/r/3256/


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/11@409130 f38db490-d61c-443f-a65b-d21fe96a405b