fix extra brace newline

Author: csmoe

src/items.rs

@@ -683,7 +683,7 @@ pub fn format_impl(
 
         if is_impl_single_line(context, items, &result, &where_clause_str, item)? {
             result.push_str(&where_clause_str);
-            if where_clause_str.contains('\n') || last_line_contains_single_line_comment(&result) {
+            if last_line_contains_single_line_comment(&result) {
                 result.push_str(&format!("{}{{{}}}", &sep, &sep));
             } else {
                 result.push_str(" {}");

tests/source/configs/where_single_line/true.rs

@@ -22,3 +22,5 @@ where
 fn lorem<Ipsum, Dolor, Sit, Amet>() -> T where Ipsum: Eq {
     // body
 }
+
+unsafe impl Sync for Foo where (): Send {}

tests/target/configs/where_single_line/true.rs

@@ -23,6 +23,12 @@ where
 }
 
 fn lorem<Ipsum, Dolor, Sit, Amet>() -> T
-where Ipsum: Eq {
+where
+    Ipsum: Eq,
+{
     // body
 }
+
+unsafe impl Sync for Foo
+where
+    (): Send, {}

tests/target/impl.rs

@@ -28,9 +28,7 @@ impl<T> Foo for T
 where
     // comment2
     // blah
-    T: Clone,
-{
-}
+    T: Clone, {}
 
 // #1823
 default impl Trait for X {}

tests/target/impls.rs

@@ -50,9 +50,7 @@ where
 
 impl<T> Foo for Bar<T>
 where
-    T: Baz,
-{
-}
+    T: Baz, {}
 
 impl<T> Foo for Bar<T>
 where
@@ -119,9 +117,7 @@ where
 pub impl<T, Z> Foo for Bar<T, Z>
 where
     T: Foo,
-    Z: Baz,
-{
-}
+    Z: Baz, {}
 
 mod m {
     impl<T> PartialEq for S<T>
@@ -135,9 +131,7 @@ mod m {
 
     impl<T> PartialEq for S<T>
     where
-        T: PartialEq,
-    {
-    }
+        T: PartialEq, {}
 }
 
 impl<BorrowType, K, V, NodeType, HandleType>