chore: clippy fix useless_conversion

src/ast/stmt.rs

@@ -194,8 +194,8 @@ impl IntoIterator for RangeCase {
     #[inline(always)]
     fn into_iter(self) -> Self::IntoIter {
         match self {
-            Self::ExclusiveInt(r, ..) => Box::new(r.into_iter()),
-            Self::InclusiveInt(r, ..) => Box::new(r.into_iter()),
+            Self::ExclusiveInt(r, ..) => Box::new(r),
+            Self::InclusiveInt(r, ..) => Box::new(r),
         }
     }
 }