WP_Theme: If the parent theme is missing, instantiate a WP_Theme obje…

…ct anyway, so it can hold errors.

Fixes the installation of parent themes when installing a child theme from WordPress.org.

see #22515.
for the 3.4 branch.



git-svn-id: http://core.svn.wordpress.org/branches/3.4@22862 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-theme.php

@@ -253,6 +253,7 @@ public function __construct( $theme_dir, $theme_root, $_child = null ) {
 				// Parent theme is missing.
 				$this->errors = new WP_Error( 'theme_no_parent', sprintf( __( 'The parent theme is missing. Please install the "%s" parent theme.' ), $this->template ) );
 				$this->cache_add( 'theme', array( 'headers' => $this->headers, 'errors' => $this->errors, 'stylesheet' => $this->stylesheet, 'template' => $this->template ) );
+				$this->parent = new WP_Theme( $this->template, $this->theme_root, $this );
 				return;
 			}
 		}