Minor cleanup

serde_json/src/value.rs

@@ -743,12 +743,12 @@ impl<'a> de::VariantVisitor for VariantDeserializer<'a> {
         de::Deserialize::deserialize(&mut Deserializer::new(self.variant.take().unwrap()))
     }
 
-    fn visit_unit(&mut self) -> Result<(), Error>
-    {
+    fn visit_unit(&mut self) -> Result<(), Error> {
         de::Deserialize::deserialize(&mut Deserializer::new(self.val.take().unwrap()))
     }
 
-    fn visit_simple<D: de::Deserialize>(&mut self) -> Result<D, Error>
+    fn visit_simple<T>(&mut self) -> Result<T, Error>
+        where T: de::Deserialize,
     {
         de::Deserialize::deserialize(&mut Deserializer::new(self.val.take().unwrap()))
     }