Fix warning from valgrind when a failed entry is tested.
Fix warning from valgrind when a failed entry is tested.

PR:		kern/173008
Submitted by:	Zhihao Yuan <lichray@gmail.com>
Reviewed by:	gabor
Approved by:	cperciva (implicit)
MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase