improve code with clippy

src/model/logbook.rs

@@ -124,7 +124,7 @@ pub enum LogbookCreateError {
 
 impl From<LogbookUpdateError> for LogbookCreateError {
     fn from(value: LogbookUpdateError) -> Self {
-        return match value {
+        match value {
             LogbookUpdateError::NotYourEntry => LogbookCreateError::NotYourEntry,
             LogbookUpdateError::TooManyRowers(a, b) => LogbookCreateError::TooManyRowers(a, b),
             LogbookUpdateError::RowerCreateError(a, b) => {
@@ -140,7 +140,7 @@ impl From<LogbookUpdateError> for LogbookCreateError {
             LogbookUpdateError::UserNotAllowedToUseBoat => {
                 LogbookCreateError::UserNotAllowedToUseBoat
             }
-        };
+        }
     }
 }
 
@@ -429,7 +429,7 @@ ORDER BY departure DESC
             return Err(LogbookUpdateError::SteeringPersonNotInRowers);
         }
 
-        if !boat.shipmaster_allowed(&user).await && self.shipmaster != user.id {
+        if !boat.shipmaster_allowed(user).await && self.shipmaster != user.id {
             //second part:
             //shipmaster has
             //entered a

src/tera/log.rs

@@ -217,12 +217,10 @@ async fn create_kiosk(
         User::find_by_id(db, boat.owner.unwrap() as i32)
             .await
             .unwrap()
-    } else {
+    } else if let Some(shipmaster) = data.shipmaster {
-        if let Some(shipmaster) = data.shipmaster {
         User::find_by_id(db, shipmaster as i32).await.unwrap()
     } else {
         User::find_by_id(db, data.rowers[0] as i32).await.unwrap()
-        }
     };
     Log::create(
         db,