More readable check for freezing fake players

And properly freeze entities with fake players riding them

src/main/java/carpet/mixins/TickRateManager_fakePlayersMixin.java

@@ -2,6 +2,7 @@ package carpet.mixins;
 
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 
 import com.llamalad7.mixinextras.injector.ModifyReturnValue;
@@ -18,9 +19,20 @@ abstract class TickRateManager_fakePlayersMixin {
     abstract boolean runsNormally();
 
     @ModifyReturnValue(method = "isEntityFrozen", at = @At("TAIL"))
-    private boolean handler(boolean alreadyFrozen, Entity entity) {
+    private boolean handler(boolean alreadyFrozen, Entity entity)
+    {
         if (alreadyFrozen) return true;
-        return !runsNormally() && (entity instanceof EntityPlayerMPFake)
-                && !((EntityInterface) entity).cm$getIndirectPassengersStream().anyMatch(e -> e instanceof Player && !(e instanceof EntityPlayerMPFake));
+        if (runsNormally()) return false;
+
+        return !isActualPlayer(entity) && // not carrying players
+                ((EntityInterface) entity)
+                    .cm$getIndirectPassengersStream()
+                    .noneMatch(TickRateManager_fakePlayersMixin::isActualPlayer);
+    }
+
+    @Unique
+    private static boolean isActualPlayer(Entity e)
+    {
+        return e instanceof Player && !(e instanceof EntityPlayerMPFake);
     }
 }