Use Self instead of macro argument

Author: phimuemue

src/adaptors/mod.rs

@@ -745,7 +745,7 @@ macro_rules! impl_tuple_combination {
 
         impl<I: Iterator + Clone> From<I> for $C<I> {
             fn from(mut iter: I) -> Self {
-                $C {
+                Self {
                     item: iter.next(),
                     iter: iter.clone(),
                     c: $P::from(iter),