The POSIX man-page states that inet_pton returns 0 if the input is not a
valid IPv4 dotted-decimal string or a valid IPv6 address string. This is
also how it is implemented in SerenityOS.
This means that we should treat a return value of 0 as an error to avoid
using an invalid address (or 0.0.0.0).
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 *
