Use std::find_if instead of manual loop.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224960 91177308-0d34-0410-b5e6-96231b3b80d8
PR22051: Missing debug location on calls in dtor thunks in Windows.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224963 91177308-0d34-0410-b5e6-96231b3b80d8