library: Use size_of from the prelude instead of imported

Use `std::mem::{size_of, size_of_val, align_of, align_of_val}` from the
prelude instead of importing or qualifying them.

These functions were added to all preludes in Rust 1.80.

1 files changed, 2 insertions, 2 deletions

diff --git a/library/core/src/alloc/layout.rs b/library/core/src/alloc/layout.rs
index 17f4d68867e..1595a3af883 100644
--- a/library/core/src/alloc/layout.rs
+++ b/library/core/src/alloc/layout.rs
@@ -17,7 +17,7 @@ use crate::{assert_unsafe_precondition, fmt, mem};
 // * https://github.com/rust-lang/rust/pull/72189
 // * https://github.com/rust-lang/rust/pull/79827
 const fn size_align<T>() -> (usize, usize) {
-    (mem::size_of::<T>(), mem::align_of::<T>())
+    (size_of::<T>(), align_of::<T>())
 }
 
 /// Layout of a block of memory.
@@ -182,7 +182,7 @@ impl Layout {
     #[must_use]
     #[inline]
     pub const fn for_value<T: ?Sized>(t: &T) -> Self {
-        let (size, align) = (mem::size_of_val(t), mem::align_of_val(t));
+        let (size, align) = (size_of_val(t), align_of_val(t));
         // SAFETY: see rationale in `new` for why this is using the unsafe variant
         unsafe { Layout::from_size_align_unchecked(size, align) }
     }