PackExtBlockCacheTableTest: suppress boxing warning on test class

Change-Id: Ie9d5da0c065ba0118927d530ed589952fb3b2c2b

org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/PackExtBlockCacheTableTest.java

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/PackExtBlockCacheTableTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/PackExtBlockCacheTableTest.java
index d506bfb..72abbf1 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/PackExtBlockCacheTableTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/dfs/PackExtBlockCacheTableTest.java
@@ -35,6 +35,7 @@
 import org.junit.Test;
 import org.mockito.Mockito;
 
+@SuppressWarnings("boxing")
 public class PackExtBlockCacheTableTest {
 	@Test
 	public void fromBlockCacheConfigs_createsDfsPackExtBlockCacheTables() {