Index: src/wp-admin/includes/plugin-install.php
===================================================================
--- src/wp-admin/includes/plugin-install.php	(revision 43958)
+++ src/wp-admin/includes/plugin-install.php	(working copy)
@@ -394,6 +394,7 @@
 	$status = 'install';
 	$url = false;
 	$update_file = false;
+	$version = '';
 
 	/*
 	 * Check to see if this plugin is known to be installed,
Index: src/wp-admin/includes/post.php
===================================================================
--- src/wp-admin/includes/post.php	(revision 43958)
+++ src/wp-admin/includes/post.php	(working copy)
@@ -1008,6 +1008,8 @@
 		$post_type = 'post';
 
 	$avail_post_stati = get_available_post_statuses($post_type);
+	$post_status      = '';
+	$perm             = '';
 
 	if ( isset($q['post_status']) && in_array( $q['post_status'], $post_stati ) ) {
 		$post_status = $q['post_status'];
@@ -1014,6 +1016,8 @@
 		$perm = 'readable';
 	}
 
+	$orderby = '';
+
 	if ( isset( $q['orderby'] ) ) {
 		$orderby = $q['orderby'];
 	} elseif ( isset( $q['post_status'] ) && in_array( $q['post_status'], array( 'pending', 'draft' ) ) ) {
@@ -1020,6 +1024,8 @@
 		$orderby = 'modified';
 	}
 
+	$order = '';
+
 	if ( isset( $q['order'] ) ) {
 		$order = $q['order'];
 	} elseif ( isset( $q['post_status'] ) && 'pending' == $q['post_status'] ) {