Hi,

In message "[Patch] check return from io_seek()"
    on 04/06/23, Michal Rokos <michal / ruby-lang.org> writes:

|Shouldn't we check the ret. val from io_seek() MACRO/fseek(o) func?
|
|We do so, but it's missing here (see below)

Commit them, although I prefer "< 0" to "!= 0".

							matz.