Rollup merge of #67322 - lzutao:nonzero-use-self, r=joshtriplett

use Self alias in place of macros

src/libcore/num/mod.rs

@@ -67,7 +67,7 @@ impl $Ty {
                 )]
                 #[inline]
                 pub const unsafe fn new_unchecked(n: $Int) -> Self {
-                    $Ty(n)
+                    Self(n)
                 }
 
                 /// Creates a non-zero if the given value is not zero.
@@ -76,7 +76,7 @@ impl $Ty {
                 pub fn new(n: $Int) -> Option<Self> {
                     if n != 0 {
                         // SAFETY: we just checked that there's no `0`
-                        Some(unsafe { $Ty(n) })
+                        Some(unsafe { Self(n) })
                     } else {
                         None
                     }

src/libcore/sync/atomic.rs

@@ -1263,7 +1263,7 @@ impl $atomic_type {
                 #[$stable]
                 #[cfg_attr(not(bootstrap), $const_stable)]
                 pub const fn new(v: $int_type) -> Self {
-                    $atomic_type {v: UnsafeCell::new(v)}
+                    Self {v: UnsafeCell::new(v)}
                 }
             }