Apache crash when visiting forum/TID

I noticed that visiting forum/TID (when the TID is related to a Group Forum) the Apache process crashes. I couldn't find any log status of such crash in my server logs.
After further investigations I've come to a conclusion that the "buggy" code is the function og_forum_set_og_group_context_from_tid($tid) called in og_forum_access_forum_page($tid = 0).

You can find, on my GIThub repo, the fixes (commit: https://github.com/thePanz/og_forum/commit/1040eca0aa9e60f8c5d898215c478...) and a comment about the

Regards