Fixes a bug when the log output is empty. The length of a slice containing an empty string is 1, not 0, so the test fails to catch when the log is empty. Instead, take a look at out, which is just a string. Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com> Upstream-commit: 2a0291489247b79058f0f94a2af7c5b3f89b78af Component: engine