[PATCH] D12741: [Clang] Fix Clang-tidy misc-use-override warnings, other minor fixes

[Hans Wennborg via cfe-commits]

hans added a comment.

It seems this broke the build for some reason. I have reverted it in r247222.

Example build breakages: http://lab.llvm.org:8011/builders/perf-x86_64-penryn-O3-polly-fast/builds/11687/steps/compile/logs/stdio, http://lab.llvm.org:8011/builders/clang-x86_64-ubuntu-gdb-75/builds/24926


Repository:
  rL LLVM

http://reviews.llvm.org/D12741