Workaround for broken build on BSD-based systems
Workaround for broken build on BSD-based systems

Change-Id: I80582dc197cd3e415a4b8a5ac41286d458ef3afc

liuwenhan/protoc-gen-lua-1,joewan/protoc-gen-lua,zhuoyikang/protoc-gen-lua,sean-lin/protoc-gen-lua,joewan/protoc-gen-lua,sean-lin/protoc-gen-lua,topameng/protoc-gen-lua,liuwenhan/protoc-gen-lua-1,djungelorm/protobuf-lua,zhuoyikang/protoc-gen-lua,zh423328/protoc-gen-lua,topameng/protoc-gen-lua,djungelorm/protobuf-lua,zh423328/protoc-gen-lua