Ticket #30767: 30767.1.diff

src/wp-admin/update-core.php

@@ -242 +242 @@
         foreach ( (array) $plugins as $plugin_file => $plugin_data) {
                 $info = plugins_api('plugin_information', array('slug' => $plugin_data->update->slug ));
                 if ( is_wp_error( $info ) ) {
-                        continue;
+                        $info = plugins_api('plugin_information', array('slug' => $plugin_file ));
+                        if ( is_wp_error( $info ) ) {
+                                continue;
+                        }
                 }
 
                 // Get plugin compat for running version of WordPress.