Ticket #16562: 16562.patch

wp-admin/includes/plugin.php

@@ -583 +583 @@
                         $key = array_search( $plugin, $current );
                         if ( false !== $key ) {
                                 $do_blog = true;
-                                array_splice( $current, $key, 1 );
+                                unset( $current[ $key ] );
                         }
                 }