GitServletResponseTest: Fix testObjectCheckerException

The recent ObjectChecker changes to pass in AnyObjectId as part
of the checkCommit method signature meant the override here was no
longer throwing an exception as expected.

Change-Id: I0383018b48426e25a0bc562387e8cd73cbe13129

org.eclipse.jgit.http.test/tst/org/eclipse/jgit/http/test/GitServletResponseTests.java

@@ -60,6 +60,7 @@ import org.eclipse.jgit.http.server.GitServlet;
 import org.eclipse.jgit.http.server.resolver.DefaultReceivePackFactory;
 import org.eclipse.jgit.junit.TestRepository;
 import org.eclipse.jgit.junit.http.HttpTestCase;
+import org.eclipse.jgit.lib.AnyObjectId;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.NullProgressMonitor;
 import org.eclipse.jgit.lib.ObjectChecker;
@@ -221,8 +222,9 @@ public class GitServletResponseTests extends HttpTestCase {
 		preHook = null;
 		oc = new ObjectChecker() {
 			@Override
-			public void checkCommit(byte[] raw) throws CorruptObjectException {
+			public void checkCommit(AnyObjectId id, byte[] raw)
-				throw new IllegalStateException();
+					throws CorruptObjectException {
+				throw new CorruptObjectException("refusing all commits");
 			}
 		};