FileTreeIteratorJava7Test: Create Git instances in try-with-resource

Change-Id: I493e90e8a0d96db5acc49759c8e138b0a8c7b099
Signed-off-by: David Pursehouse <david.pursehouse@sonymobile.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/treewalk/FileTreeIteratorJava7Test.java

@@ -103,8 +103,9 @@ public class FileTreeIteratorJava7Test extends RepositoryTestCase {
 			});
 			assertTrue(dce.commit());
 		}
-		new Git(db).commit().setMessage("Adding link").call();
-		new Git(db).reset().setMode(ResetType.HARD).call();
+		try (Git git = new Git(db)) {
+			git.commit().setMessage("Adding link").call();
+			git.reset().setMode(ResetType.HARD).call();
 			DirCacheIterator dci = new DirCacheIterator(db.readDirCache());
 			FileTreeIterator fti = new FileTreeIterator(db);
 
@@ -116,6 +117,7 @@ public class FileTreeIteratorJava7Test extends RepositoryTestCase {
 			assertFalse(fti.isModified(dci.getDirCacheEntry(), true,
 					db.newObjectReader()));
 		}
+	}
 
 	/**
 	 * Like #testSymlinkNotModifiedThoughNormalized but there is no
@@ -142,8 +144,9 @@ public class FileTreeIteratorJava7Test extends RepositoryTestCase {
 			});
 			assertTrue(dce.commit());
 		}
-		new Git(db).commit().setMessage("Adding link").call();
-		new Git(db).reset().setMode(ResetType.HARD).call();
+		try (Git git = new Git(db)) {
+			git.commit().setMessage("Adding link").call();
+			git.reset().setMode(ResetType.HARD).call();
 			DirCacheIterator dci = new DirCacheIterator(db.readDirCache());
 			FileTreeIterator fti = new FileTreeIterator(db);
 
@@ -155,6 +158,7 @@ public class FileTreeIteratorJava7Test extends RepositoryTestCase {
 			assertFalse(fti.isModified(dci.getDirCacheEntry(), true,
 					db.newObjectReader()));
 		}
+	}
 
 	/**
 	 * Like #testSymlinkNotModifiedThoughNormalized but here the link is
@@ -182,8 +186,9 @@ public class FileTreeIteratorJava7Test extends RepositoryTestCase {
 			});
 			assertTrue(dce.commit());
 		}
-		new Git(db).commit().setMessage("Adding link").call();
-		new Git(db).reset().setMode(ResetType.HARD).call();
+		try (Git git = new Git(db)) {
+			git.commit().setMessage("Adding link").call();
+			git.reset().setMode(ResetType.HARD).call();
 
 			FileUtils.delete(new File(trash, "link"), FileUtils.NONE);
 			FS.DETECTED.createSymLink(new File(trash, "link"), "newtarget");
@@ -198,4 +203,5 @@ public class FileTreeIteratorJava7Test extends RepositoryTestCase {
 			assertTrue(fti.isModified(dci.getDirCacheEntry(), true,
 					db.newObjectReader()));
 		}
+	}
 }