fixing typo in CPU cas

Author: leios

src/atomics.jl

@@ -64,7 +64,7 @@ for (name, op) in ops
 end
 
 function atomic_cas!(ptr::Ptr{T}, old::T, new::T) where T
-    Core.Intrinsics.atomic_pointerreplace(ptr, old, new, :release_acquire, :monotonic)
+    Core.Intrinsics.atomic_pointerreplace(ptr, old, new, :acquire_release, :monotonic)
 end
 
 function atomic_xchg!(ptr::Ptr{T}, b::T) where T