Add SPLAT_TEST_FINI call for SPLAT_TASKQ_TEST6_ID

This change adds the neglected SPLAT_TEST_FINI call for the
SPLAT_TASKQ_TEST6_ID, just as is done for the other 5 SPLAT_TASKQ_*
tests.

Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #64

module/splat/splat-taskq.c

@@ -722,6 +722,7 @@ void
 splat_taskq_fini(splat_subsystem_t *sub)
 {
         ASSERT(sub);
+	SPLAT_TEST_FINI(sub, SPLAT_TASKQ_TEST6_ID);
 	SPLAT_TEST_FINI(sub, SPLAT_TASKQ_TEST5_ID);
 	SPLAT_TEST_FINI(sub, SPLAT_TASKQ_TEST4_ID);
 	SPLAT_TEST_FINI(sub, SPLAT_TASKQ_TEST3_ID);