Fix /sellnpc

Author: TylerS1066

src/main/java/net/apdevteam/apautonpc/APAutoNPC.java

@@ -71,7 +71,7 @@ public ProtectedRegion isInAirspace(Location loc) {
         for (ProtectedRegion r : regions.getRegions()) {
             if (r.getId().toLowerCase().contains("airspace")
                     && r.getFlag(Flags.PVP) == StateFlag.State.DENY
-                    && r.getFlag(Flags.PVP) == StateFlag.State.DENY) {
+                    && r.getFlag(Flags.TNT) == StateFlag.State.DENY) {
                 return r;
             }
         }

src/main/java/net/apdevteam/apautonpc/SellNPCCommand.java

@@ -45,8 +45,8 @@ public boolean onCommand(CommandSender sender, Command cmd, String label, String
             return true;
         }
 
-        Owner ownedTrait = selected.getTrait(Owner.class);
-        if (!ownedTrait.getOwner().equalsIgnoreCase(player.getName()) || !ownedTrait.isOwnedBy(player)) {
+        Owner ownedTrait = selected.getTraitNullable(Owner.class);
+        if (ownedTrait == null || !ownedTrait.isOwnedBy(player)) {
             sender.sendMessage(APAutoNPC.PREFIX + "You must own the selected NPC to use that command.");
             return true;
         }