The test test_syslog_help doesn't exist, so skipping unless it passed just
produced a warning.
(From OE-Core rev: 9856fe02bf30cd9e834a7d324e357070f4d7735f)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>