bug fixes

myisam/rt_key.c:
  bug fix
myisam/rt_split.c:
  bug fix

myisam/rt_key.c

@@ -56,7 +56,7 @@ int rtree_add_key(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *key,
   }
 
   return (rtree_split_page(info, keyinfo, page_buf, key, key_length,
-			   new_page) ? -1 : 0);
+			   new_page) ? -1 : 1);
 }
 
 /*

myisam/rt_split.c

@@ -263,7 +263,7 @@ int rtree_split_page(MI_INFO *info, MI_KEYDEF *keyinfo, uchar *page, uchar *key,
 
   int max_keys = (mi_getint(page)-2) / (full_length);
 
-  n_dim = (keyinfo->keysegs-1) / 2;
+  n_dim = keyinfo->keysegs / 2;
 
   {
     int coord_buf_size = n_dim * 2 * sizeof(double) * (max_keys + 1 + 4);