use unwrap_or_default

yaserde_derive/src/common/field.rs

@@ -141,7 +141,7 @@ impl YaSerdeField {
 
     let yaserde_inner_definition = builder
       .map(|builder| quote!(let yaserde_inner = #builder;))
-      .unwrap_or(quote!());
+      .unwrap_or_default();
 
     self
       .get_default_function()

yaserde_derive/src/de/build_default_value.rs

@@ -15,7 +15,7 @@ pub fn build_default_value(
 
   let field_type = field_type
     .map(|field_type| quote!(: #field_type))
-    .unwrap_or(quote!());
+    .unwrap_or_default();
 
   Some(quote! {
     #[allow(unused_mut)]

yaserde_derive/src/ser/element.rs

@@ -58,6 +58,6 @@ pub fn condition_generator(label: &Option<Ident>, field: &YaSerdeField) -> Token
     .unwrap_or_else(|| {
       default_condition
         .map(|condition| quote!(if #condition))
-        .unwrap_or(quote!())
+        .unwrap_or_default()
     })
 }