edit

Author: surechen

clippy_lints/src/large_enum_variant.rs

@@ -141,11 +141,7 @@ impl<'tcx> LateLintPass<'tcx> for LargeEnumVariant {
                             .rev()
                             .take_while(|val| {
                                 let judge = difference > self.maximum_size_difference_allowed;
-                                difference = if difference > val.size {
-                                    difference - val.size
-                                } else {
-                                    0
-                                };
+                                difference = difference.saturating_sub(val.size);
                                 judge
                             })
                             .map(|val| {