Moved handler.func.is_none check to the top

src/state/generic.rs

@@ -21,6 +21,11 @@ where
     ) -> BoxFuture<'a, crate::Result<Option<Message>>>,
 {
     let mut handler = next.lock().await;
+    if handler.func.is_none() {
+        let _ = dialogue.exit().await;
+        return Err(HandlerUsed.into());
+    }
+
     delete_optional(&bot, handler.previous.as_ref()).await;
 
     let text = match msg.text() {
@@ -40,11 +45,6 @@ where
         return Ok(());
     }
 
-    if handler.func.is_none() {
-        let _ = dialogue.exit().await;
-        return Err(HandlerUsed.into());
-    }
-
     if let Some(failure_message) = check(&bot, &msg, &db, text).await? {
         handler.previous = Some(failure_message);
         return Ok(());

src/state/get_existing_name.rs

@@ -28,7 +28,13 @@ pub async fn get_existing_name(
     next: PackagedHandler<String>,
 ) -> crate::Result<()> {
     let user_id = msg.from().ok_or(NoUserInfo)?.id.0;
+
     let mut handler = next.lock().await;
+    if handler.func.is_none() {
+        let _ = dialogue.exit().await;
+        return Err(HandlerUsed.into());
+    }
+
     delete_optional(&bot, handler.previous.as_ref()).await;
 
     let text = match msg.text() {
@@ -54,11 +60,6 @@ pub async fn get_existing_name(
         return Ok(());
     }
 
-    if handler.func.is_none() {
-        let _ = dialogue.exit().await;
-        return Err(HandlerUsed.into());
-    }
-
     if let Some(failure_message) = check_name(&bot, &msg, &db, text, user_id).await? {
         handler.previous = Some(failure_message);
         return Ok(());

src/state/get_user.rs

@@ -114,7 +114,13 @@ pub async fn get_user(
     next: PackagedHandler<User>,
 ) -> crate::Result<()> {
     let user_id = msg.from().ok_or(NoUserInfo)?.id.0;
+
     let mut handler = next.lock().await;
+    if handler.func.is_none() {
+        let _ = dialogue.exit().await;
+        return Err(HandlerUsed.into());
+    }
+
     delete_optional(&bot, handler.previous.as_ref()).await;
 
     if let Some("/cancel") = msg.text().map(str::trim) {
@@ -125,11 +131,6 @@ pub async fn get_user(
         return Ok(());
     }
 
-    if handler.func.is_none() {
-        let _ = dialogue.exit().await;
-        return Err(HandlerUsed.into());
-    }
-
     let document = match msg.document() {
         Some(document) => document,
         None => {