Initialize CalleeInfo to fix bot after r263275

Hopefully will fix garbage output in
http://lab.llvm.org:8011/builders/clang-x86-win2008-selfhost/builds/6901

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263297 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed