chore: cleanup some clippy errors

src/oned/code_128_writer_test_tase.rs

@@ -337,8 +337,8 @@ fn testEncodeWithForcedCodeSetFailureCodeSetABadCharacter() {
 #[test]
 #[should_panic]
 fn testEncodeWithForcedCodeSetFailureCodeSetBBadCharacter() {
-    let toEncode = "ASdf\00123"; // \0 (ascii value 0)
-                                 // Characters with ASCII value below 32 should not be accepted when the code set is forced to B.
+    let toEncode = "ASdf\x000123"; // \0 (ascii value 0)
+                                   // Characters with ASCII value below 32 should not be accepted when the code set is forced to B.
 
     let mut hints = HashMap::new(); //new EnumMap<>(EncodeHintType.class);
     hints.insert(

src/oned/telepen_writer.rs

@@ -244,12 +244,10 @@ mod TelepenWriterTestCase {
     }
 
     fn doTest(input: &str, expected: &str, numeric: bool) {
-        let result: BitMatrix;
-
-        if numeric {
-            result = encode_with_hints(input);
+        let result: BitMatrix = if numeric {
+            encode_with_hints(input)
         } else {
-            result = encode(input);
+            encode(input)
         };
 
         assert_eq!(expected, bit_matrix_test_case::matrix_to_string(&result));