Revert accidental push directly to master

This reverts commit 89061c3.

Why am I even able to push to master?

Author: Darksonn

src/bytes.rs

@@ -1104,25 +1104,14 @@ unsafe fn release_shared(ptr: *mut Shared) {
     Box::from_raw(ptr);
 }
 
-#[cfg(miri)]
 fn ptr_map<F>(ptr: *mut u8, f: F) -> *mut u8
 where
     F: FnOnce(usize) -> usize,
 {
     let old_addr = ptr as usize;
     let new_addr = f(old_addr);
-    let diff = new_addr.wrapping_sub(old_addr);
-    ptr.wrapping_add(diff)
-}
-
-#[cfg(not(miri))]
-fn ptr_map<F>(ptr: *mut u8, f: F) -> *mut u8
-where
-    F: FnOnce(usize) -> usize,
-{
-    let old_addr = ptr as usize;
-    let new_addr = f(old_addr);
-    new_addr as *mut u8
+    // this optimizes better than `ptr.wrapping_add(new_addr.wrapping_sub(old_addr))`
+    ptr.wrapping_sub(old_addr).wrapping_add(new_addr)
 }
 
 // compile-fails