It's actually vlc_LogSet()
@ -142,7 +142,7 @@ VLC_API void vlc_vaLog(struct vlc_logger *const *logger, int prio,
/**
* Message logging callback signature.
* \param data data pointer as provided to vlc_msg_SetCallback().
* \param data data pointer as provided to vlc_LogSet().
* \param type message type (VLC_MSG_* values from enum vlc_log_type)
* \param item meta information
* \param fmt format string