cleanup: use for-each loop where applicable

src/main/java/net/server/audit/locks/active/TrackerReadLock.java

@@ -136,8 +136,8 @@ public class TrackerReadLock extends ReentrantReadWriteLock.ReadLock implements
     
     private static String printStackTrace(StackTraceElement[] list) {
         String s = "";
-        for(int i = 0; i < list.length; i++) {
-            s += ("    " + list[i].toString() + "\r\n");
+        for (StackTraceElement stackTraceElement : list) {
+            s += ("    " + stackTraceElement.toString() + "\r\n");
         }
         
         return s;