Fix ASAN and don't check SPECIAL_CONST_P
Heap allocated objects are never special constants. Since we're walking the heap, we know none of these objects can be special. Also, adding the object to the freelist will poison the object, so we can't check that the type is T_NONE after poison.
Added by tenderlovemaking (Aaron Patterson) about 5 years ago
Fix ASAN and don't check SPECIAL_CONST_P
Heap allocated objects are never special constants. Since we're walking
the heap, we know none of these objects can be special. Also, adding
the object to the freelist will poison the object, so we can't check
that the type is T_NONE after poison.