cargo fmt

Author: zhiqiangxu

library/alloc/src/sync.rs

@@ -2850,9 +2850,7 @@ impl<T: ?Sized, A: Allocator> Weak<T, A> {
             // We are careful to *not* create a reference covering the "data" field, as
             // the field may be mutated concurrently (for example, if the last `Arc`
             // is dropped, the data field will be dropped in-place).
-            Some(unsafe {
-                WeakInner { strong: &(*ptr).strong, weak: &(*ptr).weak }
-            })
+            Some(unsafe { WeakInner { strong: &(*ptr).strong, weak: &(*ptr).weak } })
         }
     }