crosvm: Apply cargo fix for some clippy errors

Executed the following command to fix trivial style problems automatically.
$ rustup run nightly cargo fix -Z unstable-options --clippy \
  --all-features --all-targets

BUG=chromium:908640
TEST=build

Change-Id: I8a42806dc573b25d4ca918112e7b420793261d37
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2145537
Tested-by: Keiichi Watanabe <keiichiw@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Keiichi Watanabe <keiichiw@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/linux.rs b/src/linux.rs
index a5af858..c469e0c 100644
--- a/src/linux.rs
+++ b/src/linux.rs
@@ -1398,7 +1398,7 @@ fn run_vcpu(
             // implementation accomplishes that.
             let _scoped_exit_evt = ScopedEvent::from(exit_evt);
 
-            if vcpu_affinity.len() != 0 {
+            if !vcpu_affinity.is_empty() {
                 if let Err(e) = set_cpu_affinity(vcpu_affinity) {
                     error!("Failed to set CPU affinity: {}", e);
                 }