Merge pull request #51 from Bryntet/master

Add permissions check for SSetCreativeSlot

pumpkin/src/client/player_packet.rs

@@ -400,7 +400,12 @@ impl Client {
     }
 
     pub fn handle_set_creative_slot(&mut self, _server: &mut Server, packet: SSetCreativeSlot) {
-        let inventory = &mut self.player.as_mut().unwrap().inventory;
+        let player = self.player.as_mut().unwrap();
+        if player.gamemode != GameMode::Creative {
+            self.kick("Invalid action, you can only do that if you are in creative");
+            return;
+        }
+        let inventory = &mut player.inventory;
 
         inventory.set_slot(packet.slot as usize, packet.clicked_item.to_item(), false);
     }