Fix: windows process name in 0.29.6 are broken

[poliorcetics]

• fix: zero init image name memory to avoid leftoverdata interfering
• fix: ImageName.Length is in bytes, we want the size in wide-chars

Use the following:

use std::process::Command;

use sysinfo::{Pid, PidExt, ProcessExt, System, SystemExt};

fn main() {
    let mut ping_process = Command::new(r"C:\Windows\System32\PiNg.eXE")
        .args(["-n", "50", "127.0.0.1"])
        .stdout(std::process::Stdio::null())
        .spawn()
        .unwrap();
    let ping_id = ping_process.id();

    // For some reason, on my VM, retrieving the process too quickly will lead to
    // "process.name()" being empty. To avoid this, retry until the process has a name.
    loop {
        let mut system = System::default();
        system.refresh_process_specifics(Pid::from_u32(ping_id), Default::default());
        let proc = system.process(Pid::from_u32(ping_id)).unwrap();
        if !proc.name().is_empty() {
            println!("ping.exe: {}", proc.name());
            break;
        }
    }

    let _ = ping_process.kill();
}

Then run it:

Without the fix

C:\Users\alexis>pg2.exe
ping.exe: \Device\HarddiskVolume4\Windows\System32\PING.EXE   恀Ȁ        Ā †   衬疼䒏 뻐Ȏ ŐȎ     衭疽䒄က奰Ȏ 夐Ȏ 嚠

With the fix

C:\Users\alexis>pg2.exe
ping.exe: \Device\HarddiskVolume4\Windows\System32\PING.EXE

[GuillaumeGomez]

Outch, thanks a lot!

[poliorcetics]

For tracking, it originated in #1017

[poliorcetics]

uh, there is another bug:

C:\Users\alexis>pg2-0.29.5.exe
ping.exe: PiNg.eXE

I'll fix

[poliorcetics]

Done:

C:\Users\alexis>pg2-fixed-2.exe
ping.exe: PING.EXE

[GuillaumeGomez]

Thanks!