It's minor true, but it just seems wasted. Intelligence currently does very little for a warrior, so already a lizard is at a disadvantage. Not to mention the breath ability is far inferior, especially as a warrior, than any of the other abilities.
The Lizard breath bonus scales based on level and Pyro only. Int has nothing to do with it.
The real waste is that the Dwarf bonuses are contradictory - they get +STR and +Sneaking, and since a Warrior/Rogue hybrid is a poor idea, at least one of those bonuses will pretty useless for your build.
