Fix for bug #32676: insert delayed crash with wrong column and function specified

Problem: using wrong local lock type value in the mysql_insert() results in a crash. 

Fix: use a proper value.

mysql-test/r/delayed.result

@@ -255,3 +255,8 @@ CREATE TABLE t2(c1 INT) ENGINE=MERGE UNION=(t1);
 INSERT DELAYED INTO t2 VALUES(1);
 ERROR HY000: Table storage engine for 't2' doesn't have this option
 DROP TABLE t1, t2;
+CREATE TABLE t1 (a INT);
+INSERT DELAYED INTO t1 SET b= b();
+ERROR 42S22: Unknown column 'b' in 'field list'
+DROP TABLE t1;
+End of 5.0 tests

mysql-test/t/delayed.test

@@ -252,3 +252,12 @@ CREATE TABLE t2(c1 INT) ENGINE=MERGE UNION=(t1);
 INSERT DELAYED INTO t2 VALUES(1);
 DROP TABLE t1, t2;
 
+#
+# Bug #32676: insert delayed crash with wrong column and function specified
+#
+CREATE TABLE t1 (a INT);
+--error  ER_BAD_FIELD_ERROR
+INSERT DELAYED INTO t1 SET b= b();
+DROP TABLE t1;
+
+--echo End of 5.0 tests

sql/sql_insert.cc

@@ -585,7 +585,7 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
   bool log_on= (thd->options & OPTION_BIN_LOG) ||
     (!(thd->security_ctx->master_access & SUPER_ACL));
 #endif
-  thr_lock_type lock_type = table_list->lock_type;
+  thr_lock_type lock_type;
   Item *unused_conds= 0;
   DBUG_ENTER("mysql_insert");
 
@@ -620,6 +620,7 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
     if (open_and_lock_tables(thd, table_list))
       DBUG_RETURN(TRUE);
   }
+  lock_type= table_list->lock_type;
 
   thd->proc_info="init";
   thd->used_tables=0;
@@ -637,7 +638,6 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
 
   /* mysql_prepare_insert set table_list->table if it was not set */
   table= table_list->table;
-  lock_type= table_list->lock_type;
 
   context= &thd->lex->select_lex.context;
   /*