So you mean to say you forgot the file you have editred? If yes,
Usually, your modification should be in site_root/qa-theme/Snow/qa-theme.php file find your code there.
If not than may be in any plugin file or qa-theme-base.php
If it is in plugin than you need to find it yourself, but if not in Snow/qa-theme.php than check in siteroot/qa-include/qa-theme-base.php
Find your code and fix it.
Tip:
If you have used any editor, that might have recent file listed in File menu. There you can check which file you have opended to modify.
