fix rustfmt on const impl Ty {}

Author: fee1-dead

src/items.rs

@@ -971,7 +971,7 @@ fn format_impl_ref_and_type(
         result.push_str(format_defaultness(of_trait.defaultness));
         result.push_str(format_safety(of_trait.safety));
     } else {
-        result.push_str(format_constness_right(*constness));
+        result.push_str(format_constness(*constness));
     }
 
     let shape = if context.config.style_edition() >= StyleEdition::Edition2024 {

tests/source/const_trait.rs

@@ -0,0 +1,14 @@
+#![feature(trait_alias, const_trait_impl)]
+
+const trait Bar {}
+
+const trait Foo = Bar;
+
+impl const Bar for () {}
+
+// const impl gets reformatted to impl const.. for now
+const impl Bar for u8 {}
+
+struct X;
+
+const impl X {}

tests/target/const_trait.rs

@@ -3,3 +3,12 @@
 const trait Bar {}
 
 const trait Foo = Bar;
+
+impl const Bar for () {}
+
+// const impl gets reformatted to impl const.. for now
+impl const Bar for u8 {}
+
+struct X;
+
+const impl X {}