Method reset

include/daScript/misc/smart_ptr.h:173–177

            return set(p);
        }
        __forceinline void reset() {
            T * t = ptr;
            ptr = nullptr;
            if ( t ) TP::delRef(t);
        }
        __forceinline void swap ( smart_ptr & p ) {
            T * t = ptr;
            ptr = p.ptr;