post.php: strip metadata from png and webp image file types

post.php

@@ -1251,7 +1251,7 @@ function handle_post()
                     $thumb->_destroy();
                 }
 
-                if ($config['redraw_image'] || (!@$file['exif_stripped'] && $config['strip_exif'] && ($file['extension'] == 'jpg' || $file['extension'] == 'jpeg'))) {
+                if ($config['redraw_image'] || (!@$file['exif_stripped'] && $config['strip_exif'] && ($file['extension'] == 'jpg' || $file['extension'] == 'jpeg' || $file['extension'] == 'webp' || $file['extension'] == 'png'))) {
                     if (!$config['redraw_image'] && $config['use_exiftool']) {
                         if (
                             $error = shell_exec_error('exiftool -overwrite_original -ignoreMinorErrors -q -q -all= ' .