Segfault when using several images with no projection In Monteverdi

Description

Monteverdi crash when trying to open two images with no projection

Steps to reproduce

monteverdi '/mnt/datas/OTB2/otb/Data/Input/StereoMoving.png'  '/mnt/datas/OTB2/otb/Data/Input/StereoFixed.png'

Configuration information

develop and release-8.0 branches.