A bad, missing license is only listed as bad license

[carmenbianca]

If I add the following to a comment header:

# SPDX-License-Identifier: hello

Then I get this as output from reuse lint:

# BAD LICENSES

'hello' found in:
* src/reuse/templates/default_template.jinja2


# SUMMARY

* Bad licenses: hello
* Missing licenses:
* Unused licenses:
* Used licenses: Apache-2.0, CC-BY-SA-4.0, CC0-1.0, GPL-3.0-or-later
* Read errors: 0
* Files with copyright information: 56 / 56
* Files with license information: 56 / 56

Unfortunately, your project is not compliant with version 3.0 of the REUSE Specification :-(

It should probably be under "missing licenses" as well.