Fix minor inspection issues

src/main/java/org/asamk/signal/util/Hex.java

@@ -11,8 +11,8 @@ public class Hex {
 
     public static String toStringCondensed(byte[] bytes) {
         StringBuffer buf = new StringBuffer();
-        for (int i = 0; i < bytes.length; i++) {
-            appendHexChar(buf, bytes[i]);
+        for (final byte aByte : bytes) {
+            appendHexChar(buf, aByte);
         }
         return buf.toString();
     }