deviceid test fails for APAX

[doismellburning]

Running the tests in deviceid.c with gcc -DTEST deviceid.c && ./a.out I get a test failure with the following stanza:

direwolf/src/deviceid.c

Lines 153 to 156 in 0a28e00

	// null for Vendor.
	deviceid_decode_dest ("APAX", device, sizeof(device));
	dw_printf ("%s\n", device);
	assert (strcmp(device, "AFilterX") == 0);

a.out: src/deviceid.c:156: main: Assertion `strcmp(device, "AFilterX") == 0' failed`

device appears to end up as "UNKNOWN vendor/modelAFilterX" instead of the expected "AFilterX"

Digging a little, this looks like an artifact of b26c5a4 where the error message was improved, but the test wasn't updated.

I think the best things to do here are probably:

1. Fix deviceid_decode_dest to put a space between the error message and the model
2. Fix the test's expected value
3. Automatically run the test as part of the build GitHub Actions

I'll follow up with a PR for 1+2, but 3 might take me longer as I need to grapple with CMake...

[doismellburning]

Actually I misread that sorry - the vendor is unknown, the model is known, but the error is generic. So I think b26c5a4 has a slight bug in the implementation, and the test case is what is intended