Fix -Wdelete-non-virtual-dtor in Tooling code.

Also, add an anchor as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156495 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed