clippy: turn on ignored_unit_patterns lint

This is mostly a style thing.

Author: apoelstra

Cargo.toml

@@ -79,7 +79,7 @@ float_cmp = "warn"
 fn_params_excessive_bools = "warn"
 from_iter_instead_of_collect = "warn"
 if_not_else = "warn"
-ignored_unit_patterns = "allow"
+ignored_unit_patterns = "warn"
 implicit_clone = "warn"
 implicit_hasher = "warn"
 inconsistent_struct_constructor = "warn"

src/lib.rs

@@ -426,7 +426,7 @@ mod tests {
 
         pub fn assert_run_success(self) {
             match self.run() {
-                Ok(_) => {}
+                Ok(()) => {}
                 Err(error) => panic!("Unexpected error: {error}"),
             }
         }