main: quit if [ALT+F4] on [ask_before_quit], add [save_before_quit]

If user clicked the [X] or [ALT+F4] while on the [ask_before_quit]
screen, it'll actually exit now.

The [save_before_quit] option actually... saves before quitting now.
No cloning since we're exiting and no [ErrorState] setting on errors.
The console logs will show if a save error happens.

src/helper.rs

@@ -886,8 +886,8 @@ impl Helper {
 					// And... wipe it again (only if we're stopping full).
 					// If we're restarting, the next start will wipe it for us.
 					if signal != ProcessSignal::Restart { SudoState::wipe(&sudo); }
-				} else {
+				} else if let Err(e) = child_pty.lock().unwrap().kill() {
-					if let Err(e) = child_pty.lock().unwrap().kill() { error!("XMRig Watchdog | Kill error: {}", e); }
+					error!("XMRig Watchdog | Kill error: {}", e);
 				}
 				let exit_status = match child_pty.lock().unwrap().wait() {
 					Ok(e) => {

src/main.rs

@@ -157,6 +157,12 @@ impl App {
 		}
 	}
 
+	fn save_before_quit(&mut self) {
+		if let Err(e) = State::save(&mut self.state, &self.state_path) { error!("State file: {}", e); }
+		if let Err(e) = Node::save(&self.node_vec, &self.node_path) { error!("Node list: {}", e); }
+		if let Err(e) = Pool::save(&self.pool_vec, &self.pool_path) { error!("Pool list: {}", e); }
+	}
+
 	fn new(now: Instant) -> Self {
 		info!("Initializing App Struct...");
 		debug!("App Init | P2Pool & XMRig processes...");
@@ -908,10 +914,18 @@ fn main() {
 
 impl eframe::App for App {
 	fn on_close_event(&mut self) -> bool {
-		if self.state.gupax.ask_before_quit {
+		// If we're already on the [ask_before_quit] screen and
+		// the user tries to exit again, exit.
+		if self.error_state.buttons == ErrorButtons::StayQuit {
+			if self.state.gupax.save_before_quit { self.save_before_quit(); }
+			true
+		// Else, set up the [ask_before_quit] screen (if enabled).
+		} else if self.state.gupax.ask_before_quit {
 			self.error_state.set("", ErrorFerris::Oops, ErrorButtons::StayQuit);
 			false
+		// Else, just quit.
 		} else {
+			if self.state.gupax.save_before_quit { self.save_before_quit(); }
 			true
 		}
 	}
@@ -1130,7 +1144,10 @@ impl eframe::App for App {
 				        if key.is_esc() || ui.add_sized([width, height/2.0], Button::new("Stay")).clicked() {
 							self.error_state = ErrorState::new();
 						}
-						if ui.add_sized([width, height/2.0], Button::new("Quit")).clicked() { exit(0); }
+						if ui.add_sized([width, height/2.0], Button::new("Quit")).clicked() {
+							if self.state.gupax.save_before_quit { self.save_before_quit(); }
+							exit(0);
+						}
 					},
 					// This code handles the [state.toml/node.toml] resetting, [panic!]'ing if it errors once more
 					// Another error after this either means an IO error or permission error, which Gupax can't fix.

src/node.rs

@@ -367,7 +367,7 @@ impl Ping {
 		}
 
 		for handle in handles {
-			handle.await;
+			handle.await?;
 		}
 
 		let node_vec = std::mem::take(&mut *node_vec.lock().unwrap());