Fixed a "Unitialised read" error from Valgrind : AnnotationStyle was accessed before being set.
Fixed a "Unitialised read" error from Valgrind : AnnotationStyle was accessed before being set.

NicolasSchnitzler/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public,aabadie/medInria-public