Add check for wand before sending control packets, prevents unnecessary packets being sent

src/main/java/electroblob/wizardry/WizardryKeyHandler.java

@@ -1,5 +1,8 @@
 package electroblob.wizardry;
 
+import electroblob.wizardry.item.ItemWand;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.item.ItemStack;
 import org.lwjgl.input.Keyboard;
 
 import electroblob.wizardry.client.ClientProxy;
@@ -25,6 +28,15 @@ public class WizardryKeyHandler {
 
 			if(Wizardry.proxy instanceof ClientProxy){
 
+				EntityPlayer player = Minecraft.getMinecraft().player;
+				ItemStack wand = player.getHeldItemMainhand();
+
+				if(!(wand.getItem() instanceof ItemWand)){
+					wand = player.getHeldItemOffhand();
+					// If the player isn't holding a wand, then nothing else needs to be done.
+					if(!(wand.getItem() instanceof ItemWand)) return;
+				}
+
 				if(ClientProxy.NEXT_SPELL.isPressed() && Minecraft.getMinecraft().inGameHasFocus){
 					if(!NkeyPressed){
 						NkeyPressed = true;