Remove trailing whitepsace.

Author: garydgregory

src/main/java/org/apache/commons/io/IOUtils.java

@@ -133,7 +133,7 @@ public class IOUtils {
      */
     public static final char DIR_SEPARATOR_WINDOWS = '\\';
 
-    /** 
+    /**
      * A singleton empty byte array.
      *
      *  @since 2.9.0

src/main/java/org/apache/commons/io/file/CopyDirectoryVisitor.java

@@ -154,10 +154,10 @@ public FileVisitResult preVisitDirectory(final Path directory, final BasicFileAt
 
     /**
      * Relativizes against {@code sourceDirectory}, then resolves against {@code targetDirectory}.
-     * 
+     *
      * We have to call {@link Path#toString()} relative value because we cannot use paths belonging to different
      * FileSystems in the Path methods, usually this leads to {@link ProviderMismatchException}.
-     * 
+     *
      * @param directory the directory to relativize.
      * @return a new path, relativized against sourceDirectory, then resolved against targetDirectory.
      */

src/main/java/org/apache/commons/io/input/TimestampedObserver.java

@@ -28,7 +28,7 @@
  * <p>
  * For example:
  * </p>
- * 
+ *
  * <pre>
  * final TimestampedObserver timetampedObserver = new TimestampedObserver();
  * try (final ObservableInputStream inputStream = new ObservableInputStream(...),
@@ -61,7 +61,7 @@ public Instant getCloseInstant() {
 
     /**
      * Gets the Duration between creation and close.
-     * 
+     *
      * @return the Duration between creation and close.
      */
     public Duration getOpenToCloseDuration() {
@@ -70,7 +70,7 @@ public Duration getOpenToCloseDuration() {
 
     /**
      * Gets the Duration between creation and now.
-     * 
+     *
      * @return the Duration between creation and now.
      */
     public Duration getOpenToNowDuration() {