Fix misleading indentation; replace a couple of NULLs with nullptr. Resolves https://reviews.llvm.org/D42945 ; thanks to Bruce Mitchener for the patch.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@324378 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed