Add temp var aliases

src/battle_tower.c

@@ -2200,7 +2200,7 @@ static void SaveTowerChallenge(void)
         SaveBattleTowerRecord();
 
     gSaveBlock2Ptr->frontier.challengeStatus = gSpecialVar_0x8005;
-    VarSet(VAR_TEMP_0, 0);
+    VarSet(VAR_TEMP_CHALLENGE_STATUS, 0);
     gSaveBlock2Ptr->frontier.challengePaused = TRUE;
     SaveGameFrontier();
 }