refs #5104, fix compilation of MySQL 5.5

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@53426 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/ha_tokudb.h

@@ -721,7 +721,9 @@ private:
     int __close(int mutex_is_locked);
     int get_next(uchar* buf, int direction);
     int read_data_from_range_query_buff(uchar* buf, bool need_val);
+#if defined(MARIADB_BASE_VERSION)
     enum icp_result toku_handler_index_cond_check(Item* pushed_idx_cond);
+#endif
     void invalidate_bulk_fetch();
     void invalidate_icp();
     int delete_all_rows_internal();