Fix recovery cursor error handling
Fix recovery cursor error handling

This was broken after xlog cursor refactoring. xlog_cursor_next_xc can
raise an error, but this error won't catched. Add proper support for
panic_if_error flag.

Issue #1720

rtsisyk/tarantool,rtsisyk/tarantool,mejedi/tarantool,mejedi/tarantool,rtsisyk/tarantool,mejedi/tarantool,mejedi/tarantool,rtsisyk/tarantool