[llvm-exegesis] Fix unit tests on PowerPC/AArch64.

We were comparing char*s and not contents. Introduced in rL346489.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@346493 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed