BINLOG with LOCK TABLES and SAVEPOINT could cause a crash in debug bin

MDEV-22048 Assertion `binlog_table_maps == 0 ||
           locked_tables_mode == LTM_LOCK_TABLES' failed in
           THD::reset_for_next_command

mysql-test/suite/binlog/r/binlog_mixed.result

@@ -0,0 +1,11 @@
+CREATE TABLE t1 (a INT) ENGINE=InnoDB;
+INSERT INTO t1 (a) VALUES (1),(2);
+CREATE TABLE t2 (b INT) ENGINE=InnoDB;
+CREATE TRIGGER tr1 BEFORE UPDATE ON t1 FOR EACH ROW SET @a = 0;
+CREATE TRIGGER tr2 BEFORE INSERT ON t2 FOR EACH ROW DELETE FROM t1 LIMIT 1;
+SET AUTOCOMMIT= OFF;
+LOCK TABLES t2 WRITE;
+DELETE FROM t1 LIMIT 1;
+SAVEPOINT A;
+UNLOCK TABLES;
+DROP TABLE t1, t2;

mysql-test/suite/binlog/t/binlog_mixed.test

@@ -0,0 +1,23 @@
+--source include/have_innodb.inc
+--source include/have_binlog_format_mixed_or_row.inc
+
+#
+# MDEV-22048 Assertion `binlog_table_maps == 0 ||
+#            locked_tables_mode == LTM_LOCK_TABLES' failed in
+#            THD::reset_for_next_command
+#
+
+CREATE TABLE t1 (a INT) ENGINE=InnoDB;
+INSERT INTO t1 (a) VALUES (1),(2);
+
+CREATE TABLE t2 (b INT) ENGINE=InnoDB;
+
+CREATE TRIGGER tr1 BEFORE UPDATE ON t1 FOR EACH ROW SET @a = 0;
+CREATE TRIGGER tr2 BEFORE INSERT ON t2 FOR EACH ROW DELETE FROM t1 LIMIT 1;
+
+SET AUTOCOMMIT= OFF;
+LOCK TABLES t2 WRITE;
+DELETE FROM t1 LIMIT 1;
+SAVEPOINT A;
+UNLOCK TABLES;
+DROP TABLE t1, t2;

sql/sql_parse.cc

@@ -5045,6 +5045,7 @@ mysql_execute_command(THD *thd)
         res= 1;
       thd->mdl_context.release_transactional_locks();
       thd->variables.option_bits&= ~(OPTION_TABLE_LOCK);
+      thd->reset_binlog_for_next_statement();
     }
     if (thd->global_read_lock.is_acquired() &&
         thd->current_backup_stage == BACKUP_FINISHED)