Revert Bar's fix as this causes changes in the key tree that could cause incompatibilites

Fix instead wrong call to ha_key_cmp
This is related to bug #10741 Inserting double value into utf8 column crashes server


myisam/mi_key.c:
  Revert Bar's fix as this causes changes in the key tree that could cause incompatibilites
myisam/mi_rnext_same.c:
  Fixed wrong arguments to ha_key_cmp()
  This caused a compare to fail if we first found a key with end space and then same key without end space
mysql-test/r/ctype_utf8.result:
  Additional test
mysql-test/t/ctype_utf8.test:
  Additional test

myisam/mi_key.c

@@ -84,8 +84,7 @@ uint _mi_make_key(register MI_INFO *info, uint keynr, uchar *key,
     pos= (byte*) record+keyseg->start;
     if (keyseg->flag & HA_SPACE_PACK)
     {
-      FIX_LENGTH(cs, pos, length, char_length);
-      end= pos + char_length;
+      end= pos + length;
       if (type != HA_KEYTYPE_NUM)
       {
 	while (end > pos && end[-1] == ' ')
@@ -96,7 +95,8 @@ uint _mi_make_key(register MI_INFO *info, uint keynr, uchar *key,
 	while (pos < end && pos[0] == ' ')
 	  pos++;
       }
-      char_length= (uint) (end - pos);
+      length=(uint) (end-pos);
+      FIX_LENGTH(cs, pos, length, char_length);
       store_key_length_inc(key,char_length);
       memcpy((byte*) key,(byte*) pos,(size_t) char_length);
       key+=char_length;

myisam/mi_rnext_same.c

@@ -68,8 +68,8 @@ int mi_rnext_same(MI_INFO *info, byte *buf)
 			       info->lastkey_length,SEARCH_BIGGER,
 			       info->s->state.key_root[inx])))
           break;
-        if (ha_key_cmp(keyinfo->seg,info->lastkey2,info->lastkey,
-		    info->last_rkey_length, SEARCH_FIND, &not_used))
+        if (ha_key_cmp(keyinfo->seg, info->lastkey, info->lastkey2,
+                       info->last_rkey_length, SEARCH_FIND, &not_used))
         {
           error=1;
           my_errno=HA_ERR_END_OF_FILE;

mysql-test/r/ctype_utf8.result

@@ -901,4 +901,7 @@ insert into t1 values (2,'Durban');
 select * from t1 where city = 'Durban';
 id	city
 2	Durban
+select * from t1 where city = 'Durban ';
+id	city
+2	Durban
 drop table t1;

mysql-test/t/ctype_utf8.test

@@ -744,4 +744,5 @@ create table t1 (
 insert into t1 values (1,'Durban North');
 insert into t1 values (2,'Durban');
 select * from t1 where city = 'Durban';
+select * from t1 where city = 'Durban ';
 drop table t1;