Fix some improper item cloning instances that would have dropped enchantments

src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java

@@ -68,8 +68,8 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
     }
 
     public void setItemOnCursor(ItemStack item) {
-        CraftItemStack stack = new CraftItemStack(item.getType(), item.getAmount(), item.getDurability());
+        CraftItemStack stack = new CraftItemStack(item);
-        getHandle().inventory.setCarried(stack.getType() == Material.AIR ? null : stack.getHandle());
+        getHandle().inventory.setCarried(stack.getHandle());
         if (this instanceof CraftPlayer) {
             ((EntityPlayer) getHandle()).broadcastCarriedItem(); // Send set slot for cursor
         }

src/main/java/org/bukkit/craftbukkit/inventory/CraftInventory.java

@@ -266,7 +266,7 @@ public class CraftInventory implements Inventory {
                     } else {
                         // More than a single stack!
                         if (item.getAmount() > getMaxItemStack()) {
-                            CraftItemStack stack = new CraftItemStack(item.getTypeId(), getMaxItemStack(), item.getDurability());
+                            CraftItemStack stack = new CraftItemStack(item);
                             stack.addUnsafeEnchantments(item.getEnchantments());
                             setItem(firstFree, stack);
                             item.setAmount(item.getAmount() - getMaxItemStack());

src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryCrafting.java

@@ -114,7 +114,7 @@ public class CraftInventoryCrafting extends CraftInventory implements CraftingIn
                 if (item == null || item.getTypeId() <= 0) {
                     mcItems[i] = null;
                 } else {
-                    mcItems[i] = new net.minecraft.server.ItemStack( item.getTypeId(), item.getAmount(), item.getDurability());
+                    mcItems[i] = CraftItemStack.createNMSItemStack(item);
                 }
             } else {
                 mcItems[i] = null;