Fixed valgrind problem: reference on deleted memory of temporary table name.

Removed previous patch of this problem.

sql/sql_derived.cc

@@ -211,8 +211,6 @@ bool mysql_derived_prepare(THD *thd, LEX *lex, TABLE_LIST *orig_table_list)
       }
       orig_table_list->derived_result= derived_result;
       orig_table_list->table= table;
-      orig_table_list->table_name=        table->s->table_name.str;
-      orig_table_list->table_name_length= table->s->table_name.length;
       table->derived_select_number= first_select->select_number;
       table->s->tmp_table= NON_TRANSACTIONAL_TMP_TABLE;
 #ifndef NO_EMBEDDED_ACCESS_CHECKS

sql/sql_show.cc

@@ -729,7 +729,6 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
   Protocol *protocol= thd->protocol;
   char buff[2048];
   String buffer(buff, sizeof(buff), system_charset_info);
-  char *save_db, *save_table_name;
   bool retval= TRUE;                             // Assume error
   List<Item> field_list;
   DBUG_ENTER("mysqld_show_create");
@@ -739,10 +738,6 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
   /* We want to preserve the tree for views. */
   thd->lex->context_analysis_only|= CONTEXT_ANALYSIS_ONLY_VIEW;
 
-  /* Store original names if called from SP */
-  save_db=         table_list->db;
-  save_table_name= table_list->table_name;
-
   {
     Show_create_error_handler view_error_suppressor(thd, table_list);
     thd->push_internal_handler(&view_error_suppressor);
@@ -825,11 +820,7 @@ mysqld_show_create(THD *thd, TABLE_LIST *table_list)
   retval= FALSE;                                // ok
 
 error:
-  /* Restore table list if called by stored procedure */
-  table_list->db=         save_db;
-  table_list->table_name= save_table_name;
   DBUG_RETURN(retval);
-
 }
 
 bool mysqld_show_create_db(THD *thd, char *dbname,