edition: Eliminate blocks superseded by NLL

Before the new borrow checker in the 2018 edition, we sometimes used to
have to manually insert curly braced blocks to limit the scope of
borrows. These are no longer needed.

Details in:

https://doc.rust-lang.org/edition-guide/rust-2018/ownership-and-lifetimes/non-lexical-lifetimes.html

TEST=cargo check --all-features
TEST=local kokoro

Change-Id: I59f9f98dcc03c8790c53e080a527ad9b68c8d6f3
Reviewed-on: https://chromium-review.googlesource.com/1568075
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>

1 files changed, 4 insertions, 6 deletions

diff --git a/msg_socket/src/msg_on_socket.rs b/msg_socket/src/msg_on_socket.rs
index cf5e528..98976e8 100644
--- a/msg_socket/src/msg_on_socket.rs
+++ b/msg_socket/src/msg_on_socket.rs
@@ -212,13 +212,11 @@ rawfd_impl!(UnixDatagram);
 unsafe trait AlignedNew: Sized + DataInit {
     unsafe fn from_unaligned(buffer: &[u8]) -> Option<Self> {
         let mut value = std::mem::uninitialized::<Self>();
-        {
-            let value_mem = value.as_mut_slice();
-            if value_mem.len() != buffer.len() {
-                return None;
-            }
-            value_mem.copy_from_slice(buffer);
+        let value_mem = value.as_mut_slice();
+        if value_mem.len() != buffer.len() {
+            return None;
         }
+        value_mem.copy_from_slice(buffer);
         Some(value)
     }
 }