Pad out with zeros.

ROM2/crctest.c

@@ -36,6 +36,6 @@ int main(int argc, char** argv) {
 	crc = docrc(((char*)&msgid), 1, 0, crc);
 	crc = docrc(password, strlen(password), 0, crc);
 	crc = docrc(message, strlen(message), 0, crc);
-	printf("CRC is 0x%x\n", crc);
+	printf("%04x\n", crc);
 	return 0;
 }