Enable test on windows

Author: Serock3

talpid-wireguard/src/lib.rs

@@ -1096,7 +1096,7 @@ fn mtu_spacing(mtu_min: u16, mtu_max: u16, step_size: u16) -> Vec<u16> {
     ret
 }
 
-#[cfg(all(test, target_os = "linux"))]
+#[cfg(all(test, any(target_os = "linux", windows)))]
 mod tests {
     use crate::mtu_spacing;
     use proptest::prelude::*;