fix(nta): detach tport on timer f timeout to avoid dns race condition
Closes FLEXISIP-1053
We removed the remaining fix from 546b59f6
to allow a new DNS request while another is waiting for a response. We
fixed the crash of FLEXISIP-616 by detaching tport from outgoing
transactions on timer b/f.
+ Fixed a small log typo in sres.c
Edited by Anthony Gauchy