libbinder: Status: check dataPosition sets. Bug: 132650049 Test: fuzzer Change-Id: Id230eae4316a444bc82b416b2049d5a5f589f89a Merged-In: Id230eae4316a444bc82b416b2049d5a5f589f89a (cherry picked from commit 509e0e02730a609c91282625c50a21f731d0f23d)