check_clang_tidy_fix.sh: Fail immediately if clang-tidy crashes.
check_clang_tidy_fix.sh: Fail immediately if clang-tidy crashes.

Otherwise we'll get confusing messages from FileCheck instead of seeing the real issue.

git-svn-id: a34e9779ed74578ad5922b3306b3d80a0c825546@213739 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra,llvm-mirror/clang-tools-extra