Remove trailing whitespace.

Author: Gary Gregory

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

@@ -1962,7 +1962,7 @@ public static Iterator<File> iterateFilesAndDirs(final File directory, final IOF
      * <a href="https://bugs.openjdk.java.net/browse/JDK-8177809">JDK-8177809</a> where {@link File#lastModified()} is
      * losing milliseconds (always ends in 000). This bug exists in OpenJDK 8 and 9, and is fixed in 10.
      * </p>
-     * 
+     *
      * @param file The File to query.
      * @return See {@link java.nio.file.attribute.FileTime#toMillis()}.
      * @throws IOException if an I/O error occurs.
@@ -1983,7 +1983,7 @@ public static long lastModified(final File file) throws IOException {
      * <a href="https://bugs.openjdk.java.net/browse/JDK-8177809">JDK-8177809</a> where {@link File#lastModified()} is
      * losing milliseconds (always ends in 000). This bug exists in OpenJDK 8 and 9, and is fixed in 10.
      * </p>
-     * 
+     *
      * @param file The File to query.
      * @return See {@link java.nio.file.attribute.FileTime#toMillis()}.
      * @throws IllegalArgumentException if an I/O error occurs.

src/test/java/org/apache/commons/io/FileUtilsFileNewerTestCase.java

@@ -69,7 +69,7 @@ public void setUp() throws Exception {
 
     /**
      * Tests the {@code isFileNewer(File, *)} methods which a "normal" file.
-     * @throws IOException 
+     * @throws IOException
      *
      * @see FileUtils#isFileNewer(File, long)
      * @see FileUtils#isFileNewer(File, Date)