New review comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/37139#discussion_r903678411

Comment:
- Test the `added` before splitting lines, and use shell suffix matching to extract the status instead of `grep`
- Use a `case` statement instead of a pair of `test` invocations to match built and installed modules
- `printf %s "some string"` -> `printf "some string"`; the format insertion is unnecessary here

```suggestion
		$DKMS status -m "$1" | while read -r line; do
			if [ "${line##*: }" = "added" ]; then
				# The module wasn't built successfully for any kernel version; remove it
				printf "Cleaning up DKMS module '$modname-$modver'... "
				$DKMS remove -m "$modname" -v "$modver" >/dev/null 2>&1
				continue
			fi

			IFS=,:/ read -r modname modver kver arch status _ <<-EOF
			$line
			EOF

			case "$status" in
			installed|built)
				# The module was installed or built for a kernel version; remove it
				printf "Removing DKMS module '$modname-$modver' for kernel-$kver... "
				$DKMS remove -m "$modname" -v "$modver" -k "$kver" >/dev/null 2>&1
				;;
			*)
				# Any other status is unexpected; just ignore
				;;
			esac
```