Rework crash recovery cleanup in ASTUnit and CIndex to recover more memory during a Sema crash (we have just a handful of leaks left)
and to use the simplified cleanup registration API.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@128059 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed