SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
Problem:
- If `fork()` fails the system tries to call `execl()`. That will
either succeed and replace the running process image or it will fail
and it needs to try again. The `if` is redundant because it will
only be evaluated if `execl()` fails.
Solution:
- Remove the `if`.
