chore: fix clippy errors (#560)

Author: m4tx

cot/src/config.rs

@@ -1578,7 +1578,7 @@ impl From<Expiry> for tower_sessions::Expiry {
             Expiry::OnSessionEnd => Self::OnSessionEnd,
             Expiry::OnInactivity(duration) => {
                 Self::OnInactivity(time::Duration::try_from(duration).unwrap_or_else(|e| {
-                    panic!("could not convert {duration:?} into a valid time::Duration: {e:?}",)
+                    panic!("could not convert {duration:?} into a valid time::Duration: {e:?}")
                 }))
             }
             Expiry::AtDateTime(time) => {

cot/src/db.rs

@@ -1180,11 +1180,9 @@ impl Database {
             });
         }
 
-        let batch_size = if num_value_fields > 0 {
-            max_params / num_value_fields
-        } else {
-            return Err(DatabaseError::BulkInsertNoValueColumns);
-        };
+        let batch_size = max_params
+            .checked_div(num_value_fields)
+            .ok_or(DatabaseError::BulkInsertNoValueColumns)?;
 
         for chunk in data.chunks_mut(batch_size) {
             self.bulk_insert_chunk(

cot/src/router/path.rs

@@ -36,11 +36,7 @@ impl PathMatcher {
             .chain([None])
             .enumerate()
             .peekable();
-        loop {
-            let Some((index, ch)) = char_iter.next() else {
-                break;
-            };
-
+        while let Some((index, ch)) = char_iter.next() {
             match (ch, state) {
                 (Some('{') | None, State::Literal { start }) => {
                     let literal = &path_pattern[start..index];