fix regression in mediarelay
fix regression in mediarelay

biddyweb/flexisip,BelledonneCommunications/flexisip,gale320/flexisip,biddyweb/flexisip,BelledonneCommunications/flexisip,BelledonneCommunications/flexisip,gale320/flexisip,biddyweb/flexisip,gale320/flexisip,biddyweb/flexisip,BelledonneCommunications/flexisip,gale320/flexisip