Should provide more context when ASAN actually catches something bad.

Change-Id: Ia0021ca21538747855d725a2116d51b3b0480a1c
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/31591Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>