google/protobuf — pull request #29 by edmonds (2014-09-19 00:25:41+00:00)
Title: platform_macros.h: #undef GOOGLE_PROTOBUF_PLATFORM_ERROR once it's no longer needed

This makes it like `GOOGLE_PROTOBUF_ATOMICOPS_ERROR`, which is `#undef`'d at the end of its header file.