[HWASan] Fix use-after-free.cc test on x86-64
[HWASan] Fix use-after-free.cc test on x86-64

Differential Revision: https://reviews.llvm.org/D44705

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@328407 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt