backported from 5.0 patch initialization of main select for commands where subqueries are possible

sql/sql_yacc.yy

@@ -4008,7 +4008,8 @@ insert:
 	{
 	  LEX *lex= Lex;
 	  lex->sql_command= SQLCOM_INSERT;
-	  lex->duplicates= DUP_ERROR; 
+	  lex->duplicates= DUP_ERROR;
+          mysql_init_select(lex);
 	  /* for subselects */
           lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
 	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
@@ -4028,6 +4029,7 @@ replace:
 	  LEX *lex=Lex;
 	  lex->sql_command = SQLCOM_REPLACE;
 	  lex->duplicates= DUP_REPLACE;
+          mysql_init_select(lex);
 	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
 	}
 	replace_lock_option insert2
@@ -4229,6 +4231,7 @@ delete:
 	{
 	  LEX *lex= Lex;
 	  lex->sql_command= SQLCOM_DELETE;
+          mysql_init_select(lex);
 	  lex->lock_option= lex->thd->update_lock_default;
 	  lex->ignore= 0;
 	  lex->select_lex.init_order();
@@ -5321,6 +5324,7 @@ set:
 	{
 	  LEX *lex=Lex;
 	  lex->sql_command= SQLCOM_SET_OPTION;
+          mysql_init_select(lex);
 	  lex->option_type=OPT_SESSION;
 	  lex->var_list.empty();
           lex->one_shot_set= 0;