Apply vtjnash's suggested change to src/intrinsics.cpp

Co-Authored-By: NHDaly <[email protected]>

src/intrinsics.cpp

@@ -605,7 +605,7 @@ static jl_cgval_t emit_pointerref(jl_codectx_t &ctx, jl_cgval_t *argv)
  return typed_load(ctx, thePtr, im1, ety, tbaa_data, nullptr, true, align_nb);
  }
  else {
- return mark_julia_const(((jl_datatype_t*)ety)->instance);
+ return ghostValue(ety);
  }
  }
 }