crosvm: collapse simple boolean matches

Rust 1.42 introduces matches!(), which can be used to collapse simple
match statements like these.

1 files changed, 1 insertions, 4 deletions

diff --git a/kernel_cmdline/src/kernel_cmdline.rs b/kernel_cmdline/src/kernel_cmdline.rs
index d2777c7..c836e12 100644
--- a/kernel_cmdline/src/kernel_cmdline.rs
+++ b/kernel_cmdline/src/kernel_cmdline.rs
@@ -39,10 +39,7 @@ impl Display for Error {
 pub type Result<T> = result::Result<T, Error>;
 
 fn valid_char(c: char) -> bool {
-    match c {
-        ' '..='~' => true,
-        _ => false,
-    }
+    matches!(c, ' '..='~')
 }
 
 fn valid_str(s: &str) -> Result<()> {