Update WorldPackets.java

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/packets/WorldPackets.java

@@ -174,8 +174,7 @@ public class WorldPackets {
                         // Rewrite biome id 255 to plains
                         if (chunk.isBiomeData()) {
                             for (int i = 0; i < 256; i++) {
-                                int data = chunk.getBiomeData()[i] & 0xFF;
-                                if (data == 255)
+                                if (chunk.getBiomeData()[i] == -1)
                                     chunk.getBiomeData()[i] = 1;
                             }
                         }