src/mongoc/mongoc-client.c: In function '_mongoc_client_new':
src/mongoc/mongoc-client.c:723:16: warning: unused variable 'iter' [-Wunused-variable]
    bson_iter_t iter;
                ^
src/mongoc/mongoc-client.c:722:18: warning: variable 'options' set but not used [-Wunused-but-set-variable]
    const bson_t *options;
                  ^
src/mongoc/mongoc-client.c: In function '_mongoc_client_new':
src/mongoc/mongoc-client.c:723:16: warning: unused variable 'iter' [-Wunused-variable]
    bson_iter_t iter;
                ^
src/mongoc/mongoc-client.c:722:18: warning: variable 'options' set but not used [-Wunused-but-set-variable]
    const bson_t *options;
                  ^