Prevent defunct processes from being killed

[ghost]

When a parent process gets defunct, its children processes gets assigned to pid 0 as a new parent. So when fuser checks for which pid use port number on one of those processes, the returned pid is 0. Which may kill the whole system abruptly. This fix prevents from killing pid 0.

[ghost]

Is this the correct repo where to contribute ?

[dopstar]

Is this the correct repo where to contribute ?

no, https://gitlab.com/psmisc/psmisc