input delay cannot be less than 1 (#1092)

src/netplay.rs

@@ -203,6 +203,10 @@ pub fn receive_save(netplay: &mut Netplay, save_type: &str, save_data: &mut Vec<
 }
 
 pub fn send_input_delay(netplay: &mut Netplay, input_delay: usize) {
+    if input_delay < 1 {
+        return;
+    }
+
     let message = NetplayMessage {
         name: "input_delay".to_string(),
         data: (input_delay as u64).to_be_bytes().to_vec(),

src/ui/video.rs

@@ -247,7 +247,7 @@ pub fn check_callback(device: &mut device::Device) -> (bool, bool) {
     if let Some(netplay) = &mut device.netplay
         && netplay.player_number == 0
     {
-        if callback.decrease_input_delay && netplay.input_delay > 0 {
+        if callback.decrease_input_delay {
             netplay::send_input_delay(netplay, netplay.input_delay - 1);
         } else if callback.increase_input_delay {
             netplay::send_input_delay(netplay, netplay.input_delay + 1);