donate stats fix v1

src/main/java/app/entities/db/DonateStat.java

@@ -28,7 +28,7 @@ public class DonateStat {
         this.id = (int) obj[0];
         this.steam2 = String.valueOf(obj[1]);
         this.amount = (int) obj[2];
-        this.giveMethod = (VipGiveMethod) obj[4];
+        this.giveMethod = VipGiveMethod.values()[(int) obj[4]];
         this.reserved = String.valueOf(obj[5]);
         this.utime = (int) obj[6];
     }