message: [SE] Add missing errno.h header to stream_executor/lib/process_state.cc.
  Attempt to fix broken MacOS build.
diff: @@ -21,8 +21,10 @@ limitations under the License.
  #include <WinSock2.h>
  #pragma comment(lib, "Ws2_32.lib")
  #else
  +#include <errno.h>
  #include <unistd.h>
  #endif
  +
  #include <memory>
  namespace stream_executor {
  