Revert/optimize some changes from 773ccc318f2769c9b7579630569b5d8ba47b114b and d261b1e89c3d4d5191036d5a5660ef6764e593a0
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index 87b1877..c442f88 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -193,7 +193,7 @@
 		$items['qty'] = (float) $items['qty'];
 
 		// If the quantity is zero or blank there's nothing for us to do
-		if ( ! is_numeric($items['qty']) OR $items['qty'] === 0)
+		if ( ! is_numeric($items['qty']) OR $items['qty'] == 0)
 		{
 			return FALSE;
 		}
@@ -358,7 +358,7 @@
 
 		// Is the quantity zero?  If so we will remove the item from the cart.
 		// If the quantity is greater than zero we are updating
-		if ($items['qty'] === 0)
+		if ($items['qty'] == 0)
 		{
 			unset($this->_cart_contents[$items['rowid']]);
 		}