Ticket #12493: 12493.patch

wp-includes/functions.php

@@ -2282 +2282 @@
         if ( ! $ifp )
                 return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );
 
+        $bits = apply_filters( 'wp_upload_bits_data', $bits );
+
         @fwrite( $ifp, $bits );
         fclose( $ifp );
         // Set correct file permissions