rust/derive: fix clippy collapsible_match warning

And now deny warnings

diff --git a/rust/derive/src/lib.rs b/rust/derive/src/lib.rs
index bdf2da2dcb2d683c6a93395dd32ff5d179a732ea..ea314f51f6858d8a1ee792515258ffd1ca883a70 100644 (file)
--- a/rust/derive/src/lib.rs
+++ b/rust/derive/src/lib.rs
@@ -15,6 +15,7 @@
  * 02110-1301, USA.
  */
 
+#![deny(warnings)]
 #![allow(clippy::uninlined_format_args)]
 
 extern crate proc_macro;