[RESTRICT AUTOMERGE]: STS test fix for CVE-2018-11261

Free memory that's allocated

Bug: 113525913
Test: sts-tradefed run sts-engbuild-no-spl-lock -m CtsSecurityBulletinHostTestCases -t android.security.cts.Poc18_09#testPocCVE_2018_11261
Change-Id: I623869e32a0adfe78bc7ac77a06b99f13fa81305
1 file changed