Applied the changes introduced in the commit

92a32809
Author:	Oleksandr Byelkin <sanja@mariadb.com>  Tue Jul 12 00:25:08 2022
Committer:	Oleksandr Byelkin <sanja@mariadb.com>  Thu Jul 14 00:46:06 2022

for the code of MDEV-28883.

sql/sql_delete.cc

@@ -1543,7 +1543,7 @@ bool Sql_cmd_delete::prepare_inner(THD *thd)
   }
 
   if (!(result= new (thd->mem_root) multi_delete(thd, aux_tables,
-                                                 lex->table_count)))
+                                                 lex->table_count_update)))
   {
     DBUG_RETURN(TRUE);
   }

sql/sql_lex.cc

@@ -1305,7 +1305,7 @@ void LEX::start(THD *thd_arg)
   wild= 0;
   exchange= 0;
 
-  table_count= 0;
+  table_count_update= 0;
 
   DBUG_VOID_RETURN;
 }

sql/sql_lex.h

@@ -1780,15 +1780,6 @@ class Query_tables_list
     return (lock_tables_state == LTS_LOCKED);
   }
 
-  /**
-    Number of tables which were open by open_tables() and to be locked
-    by lock_tables().
-    Note that we set this member only in some cases, when this value
-    needs to be passed from open_tables() to lock_tables() which are
-    separated by some amount of code.
-  */
-  uint table_count;
-
    /*
     These constructor and destructor serve for creation/destruction
     of Query_tables_list instances which are used as backup storage.

sql/sql_yacc.yy

@@ -13396,7 +13396,7 @@ delete_single_table:
               MYSQL_YYABORT;
             Select->table_list.save_and_clear(&Lex->auxiliary_table_list);
             /* Save the number of auxiliary tables */
-            Lex->table_count= 1;
+            Lex->table_count_update= 1;
 
             Lex->query_tables= 0;
             Lex->query_tables_last= &Lex->query_tables;