Fix memory leak in message controller.
Fix memory leak in message controller.
rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,aabadie/medInria-public,NicolasSchnitzler/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public,aabadie/medInria-public