Move persist flag check

nms-patches/Entity.patch

@@ -289,15 +289,16 @@
          this.world = world;
      }
  
-@@ -1311,13 +1499,25 @@
-     }
+@@ -1301,7 +1489,7 @@
+     public boolean c(NBTTagCompound nbttagcompound) {
+         String s = this.getSaveID();
  
-     public boolean d(NBTTagCompound nbttagcompound) {
--        return this.isPassenger() ? false : this.c(nbttagcompound);
-+        return !this.persist || this.isPassenger() ? false : this.c(nbttagcompound); // CraftBukkit - persist flag
-     }
- 
-     public NBTTagCompound save(NBTTagCompound nbttagcompound) {
+-        if (!this.dead && s != null) {
++        if (this.persist && !this.dead && s != null) { // CraftBukkit - persist flag
+             nbttagcompound.setString("id", s);
+             this.save(nbttagcompound);
+             return true;
+@@ -1318,6 +1506,18 @@
          try {
              nbttagcompound.set("Pos", this.a(new double[] { this.locX, this.locY, this.locZ}));
              nbttagcompound.set("Motion", this.a(new double[] { this.motX, this.motY, this.motZ}));