Fix clippy warnings

src/arena/local.rs

@@ -57,6 +57,7 @@ impl ArenaLocal {
         }
         None
     }
+
     #[inline(always)]
     pub unsafe fn alloc_slow(
         &self,

src/arena/mod.rs

@@ -46,7 +46,8 @@ fn layout_sum(layout: &Layout) -> usize {
     layout.size() + (layout.align() - 1)
 }
 
-pub trait CasPtr {
+pub(crate) trait CasPtr {
+    #[allow(dead_code)]
     fn new(value: *mut u8) -> Self;
     fn load(&self, order: Ordering) -> *mut u8;
     fn set(&mut self, value: *mut u8);

src/blink.rs

@@ -1442,9 +1442,7 @@ fn size_hint_and_one(lower: usize, upper: Option<usize>, count: usize) -> Option
     let size_hint = lower.max(upper);
 
     // Add one more element to size hint.
-    let Some(size_hint) = size_hint.checked_add(1) else {
-        return None;
-    };
+    let size_hint = size_hint.checked_add(1)?;
 
     // Sum with current count.
     count.checked_add(size_hint)

src/sync.rs

@@ -479,7 +479,7 @@ where
         if let Some(ptr) = unsafe { self.arena.alloc_fast(layout) } {
             return Ok(ptr);
         }
-        unsafe { self.arena.alloc_slow(layout, &self.shared) }
+        unsafe { self.arena.alloc_slow(layout, self.shared) }
     }
 
     /// Resizes memory allocation.
@@ -510,7 +510,7 @@ where
         // `ptr` was allocated by this allocator.
         unsafe {
             self.arena
-                .resize_slow(ptr, old_layout, new_layout, &self.shared)
+                .resize_slow(ptr, old_layout, new_layout, self.shared)
         }
     }