uninitialized value prevents building with Werror
/servers/krag/hdd-home3/cmattes/TreeGeneration/extern/hephaistos/extern/aion/src/aion/ActionTree.cc:135: error: ‘lastTime’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
a->duration = a->endtime - a->starttime;
^