fix delete gc bug

source/quickjs-internal.h

@@ -845,6 +845,18 @@ static inline objhdr_t *chase(JSValue v) {
   return oh;
 }
 
+/* Resolve a forward pointer in-place.  After rec_resize the old record
+   gets a forward header; any JSValue slot still pointing at it must be
+   updated to follow the chain to the live copy. */
+static inline void mach_resolve_forward(JSValue *slot) {
+  if (JS_IsPtr(*slot)) {
+    objhdr_t h = *(objhdr_t *)JS_VALUE_GET_PTR(*slot);
+    if (objhdr_type(h) == OBJ_FORWARD) {
+      *slot = JS_MKPTR(objhdr_fwd_ptr(h));
+    }
+  }
+}
+
 /* Inline type checks — use these in the VM dispatch loop to avoid
    function call overhead. The public API (JS_IsArray etc. in quickjs.h)
    remains non-inline for external callers; those wrappers live in runtime.c. */