clone POI blockpos before dispatching

Spigot-Server-Patches/0648-Remove-stale-POIs.patch

@@ -25,24 +25,28 @@ index b926cebd053bef829517c9d9bbf1c609c23ca04a..6a0f07b13eef5560dfc7c7b39618c0b8
          return (Boolean) this.d(SectionPosition.a(blockposition).s()).map((villageplacesection) -> {
              return villageplacesection.a(blockposition, predicate);
 diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
-index 5b0b6edfa790918e56399ff6c83f3feb6e5aca49..b033ff44373ec87702946c3cefe664fb46d609f4 100644
+index 5b0b6edfa790918e56399ff6c83f3feb6e5aca49..9c50357bb5da309b7cad74fdee15697a20e2e15f 100644
 --- a/src/main/java/net/minecraft/server/WorldServer.java
 +++ b/src/main/java/net/minecraft/server/WorldServer.java
-@@ -1942,6 +1942,13 @@ public class WorldServer extends World implements GeneratorAccessSeed {
+@@ -1942,8 +1942,16 @@ public class WorldServer extends World implements GeneratorAccessSeed {
          Optional<VillagePlaceType> optional = VillagePlaceType.b(iblockdata);
          Optional<VillagePlaceType> optional1 = VillagePlaceType.b(iblockdata1);
  
 +        // Paper start
++        BlockPosition blockposition1 = blockposition.immutableCopy();
 +        this.getMinecraftServer().execute(() -> {
-+                if (!optional.isPresent() && this.getPoiStorage().test(blockposition, com.google.common.base.Predicates.alwaysTrue())) {
-+                    this.getPoiStorage().remove(blockposition);
++                if (!optional.isPresent() && this.getPoiStorage().test(blockposition1, com.google.common.base.Predicates.alwaysTrue())) {
++                    this.getPoiStorage().remove(blockposition1);
 +                }
 +        });
-+        // Paper end
          if (!Objects.equals(optional, optional1)) {
-             BlockPosition blockposition1 = blockposition.immutableCopy();
+-            BlockPosition blockposition1 = blockposition.immutableCopy();
++            //BlockPosition blockposition1 = blockposition.immutableCopy();
++            // Paper end
  
-@@ -1960,6 +1967,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
+             optional.ifPresent((villageplacetype) -> {
+                 this.getMinecraftServer().execute(() -> {
+@@ -1960,6 +1968,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
          }
      }