master broken on macOS

[Filipp Gunbin]

Since df7c6211cb9:

--8<---------------cut here---------------start------------->8---
  CC       dispnew.o
In file included from dispnew.c:27:
./lisp.h:1176:10: error: expected expression
  return TAG_PTR (Lisp_Symbol, symoffset);
         ^
./lisp.h:936:3: note: expanded from macro 'TAG_PTR'
  LISP_INITIALLY ((Lisp_Word) ((uintptr_t) (ptr) + LISP_WORD_TAG (tag)))
  ^
./lisp.h:615:28: note: expanded from macro 'LISP_INITIALLY'
# define LISP_INITIALLY(w) {w}
                           ^
1 error generated.
--8<---------------cut here---------------end--------------->8---

Thanks.