[NFC] [FileCheck] Fix init of stack objects in unit tests
[NFC] [FileCheck] Fix init of stack objects in unit tests

Summary:
Fix initialization style of objects allocated on the stack in unit test
to use the "Type Var(init list)" convention.

Reviewers: jhenderson, probinson, arichardson, grimar, jdenny

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68425

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@373717 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