Fix small bug

src/main/java/de/jeyp91/tippligaforum/MatchesListForumUpdater.java

@@ -25,6 +25,9 @@ public class MatchesListForumUpdater {
 
     public void updateLeague(int season, int league) {
         MatchesListCreator creator = new MatchesListCreator(season, league);
+        if(creator.getMatches().isEmpty()) {
+            return;
+        }
         String content = creator.getMatchesBeautiful();
         String contentWithCodeBBCode = "<r><CODE><s>[code]</s>" + content + "<e>[/code]</e></CODE></r>";
         Integer postId = getPostId(season, creator.getCountry(), creator.getLeagueName());