Themes: Only users with proper capability should see theme errors.

After [36335], if a template file is not loaded, an error is displayed
to logged-in users. As logged-in users may have no capabilities,
this check is insubstantial. Limit the display of this error to users
with the `install_themes` capability, i.e. someone who has the capacity
to deal with the error.

See #21931.

Built from https://develop.svn.wordpress.org/trunk@36338


git-svn-id: http://core.svn.wordpress.org/trunk@36305 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/template-loader.php

@@ -86,7 +86,7 @@ if ( defined('WP_USE_THEMES') && WP_USE_THEMES ) :
 	 */
 	if ( $template = apply_filters( 'template_include', $template ) ) {
 		include( $template );
-	} elseif ( is_user_logged_in() ) {
+	} elseif ( current_user_can( 'install_themes' ) ) {
 		$theme = wp_get_theme();
 		if ( $theme->errors() ) {
 			wp_die( $theme->errors() );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-1453073892319';
+$wp_version = '4.5-alpha-1453075152649';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.