[Bug 40421] it is the function used by Windows SetFilePointer

https://bugs.winehq.org/show_bug.cgi?id=40421

--- Comment #4 from Nikolay Sivov  ---
This is a wrong way to check last error, it's only consistent when function
returns INVALID_SET_FILE_POINTER. But if it works fine on Windows, then sure,
it's a bug. Please get a WINEDEBUG=+file,+tid,+relay log running this
application, if you don't know how to do it it's described here
-https://wiki.winehq.org/FAQ#How_do_I_get_a_debug_trace.3F. When you have it
attach it here, if it's too large, compress it first.