put better checks in place to fix issue with parse_url not having a p…

…roper url to parse

wp-content/wpalchemy/MetaBox.php

@@ -5,7 +5,7 @@
  * @copyright	Copyright (c) 2009, Dimas Begunoff, http://farinspace.com
  * @license		http://en.wikipedia.org/wiki/MIT_License The MIT License
  * @package		WPAlchemy
- * @version		1.4.16
+ * @version		1.4.17
  * @link		http://github.com/farinspace/wpalchemy
  * @link		http://farinspace.com
  */
@@ -1017,26 +1017,29 @@ function _get_current_post_type()
 	{
 		$uri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : NULL ;
 
-		$uri_parts = parse_url($uri);
+		if ( isset( $uri ) )
+		{
+			$uri_parts = parse_url($uri);
 
-		$file = basename($uri_parts['path']);
+			$file = basename($uri_parts['path']);
 
-		if ($uri AND in_array($file, array('post.php', 'post-new.php')))
-		{
-			$post_id = WPAlchemy_MetaBox::_get_post_id();
+			if ($uri AND in_array($file, array('post.php', 'post-new.php')))
+			{
+				$post_id = WPAlchemy_MetaBox::_get_post_id();
 
-			$post_type = isset($_GET['post_type']) ? $_GET['post_type'] : NULL ;
+				$post_type = isset($_GET['post_type']) ? $_GET['post_type'] : NULL ;
 
-			$post_type = $post_id ? get_post_type($post_id) : $post_type ;
+				$post_type = $post_id ? get_post_type($post_id) : $post_type ;
 
-			if (isset($post_type))
-			{
-				return $post_type;
-			}
-			else
-			{
-				// because of the 'post.php' and 'post-new.php' checks above, we can default to 'post'
-				return 'post';
+				if (isset($post_type))
+				{
+					return $post_type;
+				}
+				else
+				{
+					// because of the 'post.php' and 'post-new.php' checks above, we can default to 'post'
+					return 'post';
+				}
 			}
 		}