Merge "libcutils: hashmap: save next pointer in forEach before calling callback"

    for (i = 0; i < map->bucketCount; i++) {

        Entry* entry = map->buckets[i];

        while (entry != NULL) {

            Entry *next = entry->next;

            if (!callback(entry->key, entry->value, context)) {

                return;

            }

            entry = entry->next;

            entry = next;

        }

    }

}