fix compilation w/o partitioning

followup for d8da9202

sql/sql_alter.cc

@@ -303,7 +303,6 @@ bool Sql_cmd_alter_table::execute(THD *thd)
   create_info.data_file_name= create_info.index_file_name= NULL;
 
   thd->enable_slow_log= opt_log_slow_admin_statements;
-  thd->work_part_info= 0;
 
 #ifdef WITH_WSREP
   TABLE *find_temporary_table(THD *thd, const TABLE_LIST *tl);

sql/sql_parse.cc

@@ -3315,7 +3315,6 @@ mysql_execute_command(THD *thd)
       create_info.add(DDL_options_st::OPT_OR_REPLACE_SLAVE_GENERATED);
     }
 
-    thd->work_part_info= 0;
 #ifdef WITH_PARTITION_STORAGE_ENGINE
     {
       partition_info *part_info= thd->lex->part_info;

sql/sql_table.cc

@@ -6060,7 +6060,6 @@ handle_if_exists_options(THD *thd, TABLE *table, Alter_info *alter_info)
     }
   }
   
-  DBUG_ASSERT(thd->work_part_info == 0);
 #ifdef WITH_PARTITION_STORAGE_ENGINE
   partition_info *tab_part_info= table->part_info;
   thd->work_part_info= thd->lex->part_info;
@@ -8415,8 +8414,6 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
 {
   DBUG_ENTER("mysql_alter_table");
 
-  thd->work_part_info= 0;                       // Used by partitioning
-
   /*
     Check if we attempt to alter mysql.slow_log or
     mysql.general_log table and return an error if

sql/table.cc

@@ -2233,7 +2233,9 @@ int TABLE_SHARE::init_from_sql_statement_string(THD *thd, bool write,
     goto ret;
 
   thd->lex->create_info.db_type= hton;
+#ifdef WITH_PARTITION_STORAGE_ENGINE
   thd->work_part_info= 0;                       // For partitioning
+#endif
 
   if (tabledef_version.str)
     thd->lex->create_info.tabledef_version= tabledef_version;