Update Android for Rust 1.83.0

* Unnecessary return
* Unnecessary lifetime
* Use `.div_ceil()`

Test: m rust
Bug: 384401387
Change-Id: I7139ff204d35d179cf41b1b26aab5530f7041b39
diff --git a/guest/authfs/src/fusefs.rs b/guest/authfs/src/fusefs.rs
index fa4076d..9e49046 100644
--- a/guest/authfs/src/fusefs.rs
+++ b/guest/authfs/src/fusefs.rs
@@ -816,7 +816,7 @@
                     // FUSE ioctl is limited, thus we can't implement fs-verity ioctls without a
                     // kernel change (see b/196635431). Until it's possible, use
                     // xattr to expose what we need as an authfs specific API.
-                    if name != CStr::from_bytes_with_nul(b"authfs.fsverity.digest\0").unwrap() {
+                    if name != c"authfs.fsverity.digest" {
                         return Err(io::Error::from_raw_os_error(libc::ENODATA));
                     }