FileNameMatcherTest: Use Character.valueOf rather than new Character

Change-Id: I9d6e20a258d34ae1d2700fbe8e6c6e3b0ba94424
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/fnmatch/FileNameMatcherTest.java

@@ -69,7 +69,7 @@ public class FileNameMatcherTest {
 			final boolean appendCanMatchExpected)
 			throws InvalidPatternException {
 		final FileNameMatcher matcher = new FileNameMatcher(pattern,
-				new Character(excludedCharacter));
+				Character.valueOf(excludedCharacter));
 		matcher.append(input);
 		assertEquals(matchExpected, matcher.isMatch());
 		assertEquals(appendCanMatchExpected, matcher.canAppendMatch());