助战兼容，报错修改

serverlogic/src/main/java/com/ljsd/jieling/logic/fight/eventhandler/SevenWorldFightHandler.java

@@ -85,7 +85,7 @@ public class SevenWorldFightHandler implements IFightEventProcesor {
             if (hero == null) {
                 // 四灵试炼,助战
                 if (FourChallengeLogic.isFourChallengeTeam(teamId)){
-                    HelpHero helpHero = HelpHeroLogic.getHelpHero(user.getId(), teamPosHeroInfo.getHeroId());
+                    HelpHero helpHero = HelpHeroLogic.getHelpHeroByHeroId(user.getId(), teamPosHeroInfo.getHeroId());
                     if (helpHero == null){
                         continue;
                     }