Fix free() in keymaster VTS

The buffer is allocated by OPENSSL_malloc() in X509_NAME_oneline(name, nullptr, 0).
Should be reclaimed by OPENSSL_free() instead of free().

The patch is provided by vink.shen@mediatek.corp-partner.google.com

Bug: 109708231
Test: build pass
Change-Id: I66a864e3e28905eebac2e7d3a4517d4d5aaa39df
2 files changed