[bug #48919] exec server can attempt null pointer dereference

[Samuel Thibault]

Update of bug #48919 (project hurd):

                  Status:                    None => Fixed                  
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

Mmm, indeed. Normally, exec_setexecdata is called at boot, because
startup calls proc_setexecdata, which in turn calls exec_setexecdata.

Let's just make the code stronger for now, it makes sense anyway. We
however may need to initialize std_ports automatically to make using a
sub exec easier. We "just" need to determine what makes sense.


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