[libFuzzer] [NFC] Do not use hardcoded relative paths in tests.
[libFuzzer] [NFC] Do not use hardcoded relative paths in tests.

For paths without "%t" inside uniqueness is not guaranteed, and
potential collisions might be present.

Differential Revision: https://reviews.llvm.org/D47288

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@334546 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