Fix headpat command mentions

src/main.rs

@@ -362,9 +362,15 @@ fn ship(ctx: &mut Context, message: &Message, args: Args) -> CommandResult {
 
 #[command]
 fn headpat(ctx: &mut Context, message: &Message, args: Args) -> CommandResult {
+    let name = match message.mentions.len() {
+        0 => args.rest().trim(),
+        _ => message.mentions[0].name.as_str()
+    };
+
+
     if let Err(e) = message.channel_id.send_message(&ctx.http, |m| {
         m.embed(|e| {
-            e.title(format!("Sending headpats to **{}**...", args.rest().trim()))
+            e.title(format!("Sending headpats to **{}**...", name))
                 .image(
                     "https://i.pinimg.com/originals/83/1a/90/831a903eab6d827dcfd298b9e3196e30.jpg",
                 )