Fixex for some crashing bug

mysql-test/r/analyse.result:
  A fix for some crashing bug
mysql-test/r/handler.result:
  A fix for some crashing bug
mysql-test/t/analyse.test:
  A fix for some crashing bug
mysql-test/t/handler.test:
  A fix for some crashing bug
sql/sql_select.cc:
  A fix for some crashing bug

mysql-test/r/analyse.result

 drop table if exists t1,t2;
 create table t1 (i int, j int);
 insert into t1 values (1,2), (3,4), (5,6), (7,8);
+select count(*) from t1 procedure analyse();
+Field_name	Min_value	Max_value	Min_length	Max_length	Empties_or_zeros	Nulls	Avg_value_or_avg_length	Std	Optimal_fieldtype
+			-6510615555426900571	-6510615555426900571	-6510615555426900571	-6510615555426900571			
 select * from t1 procedure analyse();
 Field_name	Min_value	Max_value	Min_length	Max_length	Empties_or_zeros	Nulls	Avg_value_or_avg_length	Std	Optimal_fieldtype
 t1.i	1	7	1	1	0	0	4.0000	2.2361	ENUM('1','3','5','7') NOT NULL

mysql-test/r/handler.result

@@ -5,6 +5,8 @@ insert into t1 values
 (14,"aaa"),(15,"bbb"),(16,"ccc"),(16,"xxx"),
 (20,"ggg"),(21,"hhh"),(22,"iii");
 handler t1 open as t2;
+handler t2 read a=(SELECT 1);
+You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT 1)' at line 1
 handler t2 read a first;
 a	b
 14	aaa

mysql-test/t/analyse.test

@@ -7,6 +7,7 @@ drop table if exists t1,t2;
 --enable_warnings
 create table t1 (i int, j int);
 insert into t1 values (1,2), (3,4), (5,6), (7,8);
+select count(*) from t1 procedure analyse();
 select * from t1 procedure analyse();
 create table t2 select * from t1 procedure analyse();
 select * from t2;

mysql-test/t/handler.test

@@ -12,6 +12,8 @@ insert into t1 values
 (14,"aaa"),(15,"bbb"),(16,"ccc"),(16,"xxx"),
 (20,"ggg"),(21,"hhh"),(22,"iii");
 handler t1 open as t2;
+-- error 1064
+handler t2 read a=(SELECT 1);
 handler t2 read a first;
 handler t2 read a next;
 handler t2 read a next;

sql/sql_select.cc

@@ -714,6 +714,13 @@ JOIN::exec()
   int      tmp_error;
 
   DBUG_ENTER("JOIN::exec");
+  
+  if (procedure)
+  {
+    if (procedure->change_columns(fields_list) ||
+	result->prepare(fields_list, unit))
+      DBUG_VOID_RETURN;
+  }
 
   if (!tables_list)
   {                                           // Only test of functions
@@ -768,8 +775,6 @@ JOIN::exec()
 	  test_if_skip_sort_order(&join_tab[const_tables], order,
 				  select_limit, 0))))
       order=0;
-    if (procedure)
-      (void)result->prepare(fields_list, unit);
     select_describe(this, need_tmp,
 		    order != 0 && !skip_sort_order,
 		    select_distinct);
@@ -989,9 +994,6 @@ JOIN::exec()
   }
   if (procedure)
   {
-    if (procedure->change_columns(fields_list) ||
-	result->prepare(fields_list, unit))
-      DBUG_VOID_RETURN;
     count_field_types(&tmp_table_param, all_fields, 0);
   }
   if (group || tmp_table_param.sum_func_count ||