Fix respawn error due to null location

Closes #11017

patches/server/1007-Optimize-Collision-to-not-load-chunks.patch

@@ -14,14 +14,14 @@ movement will load only the chunk the player enters anyways and avoids loading
 massive amounts of surrounding chunks due to large AABB lookups.
 
 diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
-index 0d0b07c9199be9ca0d5ac3feb1d44f149ba69283..14fb62dedabf2d858bea1877c2e28d1a7b6f5be4 100644
+index 0d0b07c9199be9ca0d5ac3feb1d44f149ba69283..1aa8b914e79c0d48094cc22df60ee9750ec3ccd6 100644
 --- a/src/main/java/net/minecraft/server/players/PlayerList.java
 +++ b/src/main/java/net/minecraft/server/players/PlayerList.java
 @@ -865,6 +865,7 @@ public abstract class PlayerList {
          Vec3 vec3d = dimensiontransition.pos();
  
          entityplayer1.forceSetPositionRotation(vec3d.x, vec3d.y, vec3d.z, dimensiontransition.yRot(), dimensiontransition.xRot());
-+        worldserver.getChunkSource().addRegionTicket(net.minecraft.server.level.TicketType.POST_TELEPORT, new net.minecraft.world.level.ChunkPos(location.getBlockX() >> 4, location.getBlockZ() >> 4), 1, entityplayer.getId()); // Paper
++        worldserver.getChunkSource().addRegionTicket(net.minecraft.server.level.TicketType.POST_TELEPORT, new net.minecraft.world.level.ChunkPos(net.minecraft.util.Mth.floor(vec3d.x()) >> 4, net.minecraft.util.Mth.floor(vec3d.z()) >> 4), 1, entityplayer.getId()); // Paper
          // CraftBukkit end
          if (dimensiontransition.missingRespawnBlock()) {
              entityplayer1.connection.send(new ClientboundGameEventPacket(ClientboundGameEventPacket.NO_RESPAWN_BLOCK_AVAILABLE, 0.0F));