Rustfmt, add CallFlags::CONSUME.

src/arch/riscv64.rs

@@ -1,15 +1,13 @@
+use super::error::{Error, Result};
+use core::arch::asm;
 use core::{
     mem,
     ops::{Deref, DerefMut},
     slice,
 };
-use core::arch::asm;
-use super::error::{Error, Result};
-
 
 pub const PAGE_SIZE: usize = 4096;
 
-
 #[cfg(feature = "userspace")]
 macro_rules! syscall {
     ($($name:ident($a:ident, $($b:ident, $($c:ident, $($d:ident, $($e:ident, $($f:ident, )?)?)?)?)?);)+) => {