Release call resources with toxav_kill_transmission()
Release call resources with toxav_kill_transmission()

Reject calls on both sides to reset states.  This still needs
to be tested to see if there's any effect of doing that.

cmotc/ratox,kytvi2p/ratox,cmotc/ratox,pranomostro/ratox,insanity54/batox,pranomostro/ratox