why am I getting this error: error: ‘friends1’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  126 |      friends1[i] = (*user1).friends[i];
 User *user1 = find_user(name1, head);
    User **friends1;
    int i = 0;
    while ((*user1).friends[i] != NULL){
            friends1[i] = (*user1).friends[i];
    }
    User *user2 = find_user(name2, head);
    User **friends2;
    int j = 0;
    while ((*user2).friends[j] != NULL){
            friends2[j] = (*user2).friends[j];
    }
