ART: Reject field accesses to non-reference vregs.

The verifier will now reject any iget/iput insts
that do not have a reference object in vB.

Bug: 17207857
Signed-off-by: Stuart Monteith <stuart.monteith@arm.com>

(cherry picked from commit 695c5982eeddee18c643cc2f94c9d78fa75599ab)

Change-Id: I3790b8687673643bb142549d74f36a3e2978bf13
1 file changed