RepositoryResolveTest: Open Git in try-with-resource

Change-Id: Ibb612f3d8fd0f9913291430474311d9da62f4e6f
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/RepositoryResolveTest.java

@@ -267,7 +267,7 @@ public class RepositoryResolveTest extends SampleDataRepositoryTestCase {
 
 	@Test
 	public void resolveExprSimple() throws Exception {
-		Git git = new Git(db);
+		try (Git git = new Git(db)) {
 			writeTrashFile("file.txt", "content");
 			git.add().addFilepattern("file.txt").call();
 			git.commit().setMessage("create file").call();
@@ -275,10 +275,11 @@ public class RepositoryResolveTest extends SampleDataRepositoryTestCase {
 			assertEquals("refs/heads/master", db.simplify("refs/heads/master"));
 			assertEquals("HEAD", db.simplify("HEAD"));
 		}
+	}
 
 	@Test
 	public void resolveUpstream() throws Exception {
-		Git git = new Git(db);
+		try (Git git = new Git(db)) {
 			writeTrashFile("file.txt", "content");
 			git.add().addFilepattern("file.txt").call();
 			RevCommit c1 = git.commit().setMessage("create file").call();
@@ -297,6 +298,7 @@ public class RepositoryResolveTest extends SampleDataRepositoryTestCase {
 			git.commit().setMessage("create file").call();
 			assertEquals("refs/remotes/origin/main", db.simplify("@{upstream}"));
 		}
+	}
 
 	@Test
 	public void invalidNames() throws AmbiguousObjectException, IOException {