Crash on IneoBDSI import when a message has no alarm

The corresponding backtrace :

#0  0x00007f4c77cc8b7a in synthese::data_exchange::IneoBDSIMessages::mapWithSyntheseDataModel (this=0x7f4bf4000cc0)
    at /home/build/workspace/synthese-3.11-sprint-Linux-x86_64-stripped/mode/relwithdebinfo/slave/wheezy-slave2/server/src/61_data_exchange/6102_ineo_bdsi/IneoBDSIMessages.cpp:236
#1  0x00007f4c77c6768c in synthese::data_exchange::MappingProcessor::operator()
    (this=this@entry=0x7f4c16ffc980)
    at /home/build/workspace/synthese-3.11-sprint-Linux-x86_64-stripped/mode/relwithdebinfo/slave/wheezy-slave2/server/src/61_data_exchange/6102_ineo_bdsi/IneoBDSIImportWorker.cpp:80
#2  0x00007f4c77c64802 in synthese::data_exchange::IneoBDSIImportWorker::_processData (this=this@entry=0x7f4c10002110)
    at /home/build/workspace/synthese-3.11-sprint-Linux-x86_64-stripped/mode/relwithdebinfo/slave/wheezy-slave2/server/src/61_data_exchange/6102_ineo_bdsi/IneoBDSIImportWorker.cpp:594
#3  0x00007f4c77c653e1 in synthese::data_exchange::IneoBDSIImportWorker::_read
    (this=0x7f4c10002110)
    at /home/build/workspace/synthese-3.11-sprint-Linux-x86_64-stripped/mode/relwithdebinfo/slave/wheezy-slave2/server/src/61_data_exchange/6102_ineo_bdsi/IneoBDSIImportWorker.cpp:540
#4  0x00007f4c6b941d8b in synthese::impex::DatabaseReadImporter::load (
    this=0x7f4c10002110)
    at /home/build/workspace/synthese-3.11-sprint-Linux-x86_64-stripped/mode/rel---Type <return> to continue, or q <return> to quit---q