fix rust lints (#1469)

# Description

@swift-nav/algint-team

Fixes a new rust lint in a test

# API compatibility

Does this change introduce a API compatibility risk?

None

## API compatibility plan

If the above is "Yes", please detail the compatibility (or migration)
plan:

N/A

Author: pcrumley

rust/sbp2json/tests/common/mod.rs

@@ -76,8 +76,7 @@ pub struct DeleteTestOutput {
 
 impl Drop for DeleteTestOutput {
     fn drop(&mut self) {
-        let skip_delete =
-            env::var("RUST_SKIP_DELETE_TEST_DATA").map_or(false, |var| !var.is_empty());
+        let skip_delete = env::var("RUST_SKIP_DELETE_TEST_DATA").is_ok_and(|var| !var.is_empty());
         if skip_delete {
             return;
         }