message: OpenBSD build fix
  required for close calls.
diff: @@ -94,7 +94,7 @@ void* allocSingletonBuffer(size_t size) { return fastMalloc(size); }
  #include <cstdlib> // std::abort
  #endif
  -#if defined __ANDROID__ || defined __linux__ || defined __FreeBSD__ || defined __HAIKU__
  +#if defined __ANDROID__ || defined __linux__ || defined __FreeBSD__ || defined __OpenBSD__ || defined __HAIKU__
  # include <unistd.h>
  # include <fcntl.h>
  # include <elf.h>
  