Use ArrayRef for the fixit hint array rather than a pointer and a size.
Clean up loops over the hints to use the more idiomatic iterator form in
LLVM and Clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139195 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed