again: Avoid SIGSEGV in debug mode if CheckNbEdges() is called w/o calling Compute()
again: Avoid SIGSEGV in debug mode if CheckNbEdges() is called w/o calling Compute()

FedoraScientific/salome-smesh,FedoraScientific/salome-smesh,FedoraScientific/salome-smesh,FedoraScientific/salome-smesh