hedgewars-engine (rust): fix "protocol_version" -> "hedgewars_engine_protocol_version"
That function/symbol was renamed in ef2fc0210362
use std::io::{ Error, ErrorKind };
use super::PhysFSContext;
pub fn physfs_error_as_io_error() -> Error {
Error::new(ErrorKind::Other,
&format!("PhysicsFS Error: `{}`", PhysFSContext::get_last_error())[..])
}