fmt: cargo fmt on zk-alloc

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Barnadrot

crates/zk-alloc/src/lib.rs

@@ -1,7 +1,7 @@
 use std::alloc::{GlobalAlloc, Layout};
 use std::cell::Cell;
-use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::Once;
+use std::sync::atomic::{AtomicUsize, Ordering};
 
 mod syscall;
 
@@ -78,9 +78,7 @@ unsafe fn arena_alloc_cold(size: usize, align: usize) -> *mut u8 {
             if idx >= MAX_THREADS {
                 ARENA_BASE.set(1); // sentinel: this thread has no slab
                 // SAFETY: size and align are from a valid Layout (caller contract).
-                return unsafe {
-                    std::alloc::System.alloc(Layout::from_size_align_unchecked(size, align))
-                };
+                return unsafe { std::alloc::System.alloc(Layout::from_size_align_unchecked(size, align)) };
             }
             let slab_base = region + idx * SLAB_SIZE;
             ARENA_BASE.set(slab_base);

crates/zk-alloc/src/syscall.rs

@@ -59,11 +59,7 @@ unsafe fn syscall3(nr: usize, a1: usize, a2: usize, a3: usize) -> isize {
 pub unsafe fn mmap_anonymous(size: usize, hugetlb: bool) -> *mut u8 {
     let flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | if hugetlb { MAP_HUGETLB } else { 0 };
     let ret = unsafe { syscall6(SYS_MMAP, 0, size, PROT_READ | PROT_WRITE, flags, usize::MAX, 0) };
-    if ret < 0 {
-        ptr::null_mut()
-    } else {
-        ret as *mut u8
-    }
+    if ret < 0 { ptr::null_mut() } else { ret as *mut u8 }
 }
 
 #[inline]