ClangTidyTest.h: Don't use initializer list. msc17 doesn't recognize one.

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@204332 91177308-0d34-0410-b5e6-96231b3b80d8
ClangTidyContext: Don't use initializer on non-static member.

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@204333 91177308-0d34-0410-b5e6-96231b3b80d8