wget2 | Exit code for missing domain is 0 but should be non-zero (#652)

[Richard W.M. Jones (@rwmjones)]

Richard W_M_ Jones created an issue: 
https://gitlab.com/gnuwget/wget2/-/issues/652



The exit code when you try to download a missing / bogus domain is still `0`, 
but it should obviously not be zero.

```
$ wget http://nosuchdomainreallynodomain.abc -O /dev/null
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)
Failed to resolve 'nosuchdomainreallynodomain.abc' (Name or service not known)

                          [Files: 0  Bytes: 0  [0 B/s] Re]
$ echo $?
0
```

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