minecraft1.12/conf/patches/minecraft_ff/net.minecraft.command.CommandSpreadPlayers.java.patch

diff -r -U 3 minecraft\net\minecraft\command\CommandSpreadPlayers.java minecraft_patched\net\minecraft\command\CommandSpreadPlayers.java
--- minecraft\net\minecraft\command\CommandSpreadPlayers.java
+++ minecraft_patched\net\minecraft\command\CommandSpreadPlayers.java
@@ -97,7 +97,7 @@
          if (entity instanceof EntityPlayer) {
             set.add(entity.func_96124_cp());
          } else {
-            set.add((Object)null);
+            set.add(null);
          }
       }