Fix an unused variable introduced in rL374955 / rG21703543.
Fix an unused variable introduced in rL374955 / rG21703543.

Even though this is a unit test, it still may be run under optimization.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@374961 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm