x11-wm/wlmaker: unbreak non-x86 build

In file included from apps/primitives/segment_display.c:21:
In file included from apps/primitives/segment_display.h:23:
In file included from submodules/libbase/../libbase/libbase.h:25:
submodules/libbase/../libbase/atomic.h:109:5: error: address argument to atomic operation must be a pointer to _Atomic type ('int32_t *' (aka 'int *') invalid)
  109 |     atomic_store(&a_ptr->v, v);
      |     ^            ~~~~~~~~~
/usr/include/stdatomic.h:366:2: note: expanded from macro 'atomic_store'
  366 |         atomic_store_explicit(object, desired, memory_order_seq_cst)
      |         ^                     ~~~~~~
/usr/include/stdatomic.h:259:2: note: expanded from macro 'atomic_store_explicit'
  259 |         __c11_atomic_store(object, desired, order)
      |         ^                  ~~~~~~

Reported by:	pkg-fallout