Pyton: Segfault when execute() is not properly called

Description

A nasty segfault happen under some very basic conditions, when using applications from the Python wrapper and trying to access some image information

Steps to reproduce

The following script causes a segfault:

import otbApplication
app = otbApplication.Registry.CreateApplication("BandMath")
app.SetParameterStringList("il", ["some_raster.tif"])
#app.Execute()  # Uncomment this: no segfault
print(app.GetImageSize("out"))

Configuration information

Ubuntu 20.04

OTB :

• 7.4.0
• 8.0.1