Change Error unittest to use the LLVM_ENABLE_ABI_BREAKING_CHECKS instead of NDEBUG
Change Error unittest to use the LLVM_ENABLE_ABI_BREAKING_CHECKS instead of NDEBUG

This is consistent with the header (after r288087) and fixes the
test for the configuration:
  -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_ABI_BREAKING_CHECKS=FORCE_OFF




git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@288196 91177308-0d34-0410-b5e6-96231b3b80d8

GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm