app: zero init ArchiveMXFInfo struct in mxf_app_get_info
app: zero init ArchiveMXFInfo struct in mxf_app_get_info

Limecraft/ebu-libmxf,Limecraft/ebu-libmxf,stuarthicks/libmxf,stuarthicks/libmxf,ebu/ebu-libmxf,ebu/ebu-libmxf,stuarthicks/libmxf,ebu/ebu-libmxf,ebu/ebu-libmxf,Limecraft/ebu-libmxf,stuarthicks/libmxf