driver-cassandra: Fix prepared statement pool leak

diff --git a/src/lib-sql/driver-cassandra.c b/src/lib-sql/driver-cassandra.c
index 162a608d3d118993e63555fdb334af46580ce034..4e6680957337f508d4460e702a57f1edb88c5e8e 100644 (file)
--- a/src/lib-sql/driver-cassandra.c
+++ b/src/lib-sql/driver-cassandra.c
@@ -2172,6 +2172,7 @@ static void prepare_finish_statement(struct cassandra_sql_statement *stmt)
                        stmt->result->error = i_strdup(stmt->prep->error);
                        result_finish(stmt->result);
                }
+               pool_unref(&stmt->stmt.pool);
                return;
        }
        stmt->cass_stmt = cass_prepared_bind(stmt->prep->prepared);