SubmoduleStatusCommand: Open Repository in try-with-resource

Change-Id: Id65c8a94d43bc01e76733eb2ff87635d0f8a8dc2
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit/src/org/eclipse/jgit/api/SubmoduleStatusCommand.java

@@ -130,16 +130,14 @@ public class SubmoduleStatusCommand extends
 					id);
 
 		// Report uninitialized if no submodule repository
-		Repository subRepo = generator.getRepository();
-		if (subRepo == null)
-			return new SubmoduleStatus(SubmoduleStatusType.UNINITIALIZED, path,
-					id);
+		ObjectId headId = null;
+		try (Repository subRepo = generator.getRepository()) {
+			if (subRepo == null) {
+				return new SubmoduleStatus(SubmoduleStatusType.UNINITIALIZED,
+						path, id);
+			}
 
-		ObjectId headId;
-		try {
 			headId = subRepo.resolve(Constants.HEAD);
-		} finally {
-			subRepo.close();
 		}
 
 		// Report uninitialized if no HEAD commit in submodule repository