Whitespace and lambda clean ups.

src/main/java/org/apache/commons/lang3/concurrent/locks/LockingVisitors.java

@@ -87,12 +87,12 @@ public static class LockVisitor<O, L> {
          * Java 8.
          */
         private final L lock;
-        
+
         /**
          * The guarded object.
          */
         private final O object;
-        
+
         /**
          * Supplies the read lock, usually from the lock object.
          */

src/test/java/org/apache/commons/lang3/concurrent/locks/LockingVisitorsTest.java

@@ -80,11 +80,11 @@ public void testReentrantReadWriteLockExclusive() throws Exception {
     public void testResultValidation() {
         final Object hidden = new Object();
         final StampedLockVisitor<Object> lock = LockingVisitors.stampedLockVisitor(hidden);
-        final Object o1 = lock.applyReadLocked((h) -> {
+        final Object o1 = lock.applyReadLocked(h -> {
             return new Object(); });
         assertNotNull(o1);
         assertNotSame(hidden, o1);
-        final Object o2 = lock.applyWriteLocked((h) -> {
+        final Object o2 = lock.applyWriteLocked(h -> {
             return new Object(); });
         assertNotNull(o2);
         assertNotSame(hidden, o2);