Update dns_resolver.zig

src/bun.js/api/bun/dns_resolver.zig

@@ -1370,8 +1370,12 @@ pub const DNSResolver = struct {
 
         var pending: ?*CAresLookup(cares_type, lookup_name) = key.lookup.head.next;
         var prev_global = key.lookup.head.globalThis;
+
+        //  The callback need not and should not attempt to free the memory
+        //  pointed to by hostent; the ares library will free it when the
+        //  callback returns.
         var array = addr.toJSReponse(this.vm.allocator, prev_global, lookup_name);
-        defer addr.deinit();
+
         array.ensureStillAlive();
         key.lookup.head.onComplete(array);
         bun.default_allocator.destroy(key.lookup);