What did Ulrich tell Georg? What do you think prompted this change of heart?

From the text:

“Neighbor,” he said presently, “do as you please if your men come first. It was a fair compact. But as for me, I’ve changed my mind. If my men are the first to come, you shall be the first to be helped, as though you were my guest. We have quarreled like devils all our lives over this stupid strip of forest, where the trees can’t even stand upright in a breath of wind. Lying here tonight, thinking, I’ve come to think we’ve been rather fools; there are better things in life than getting the better of a boundary dispute. Neighbor, if you will help me to bury the old quarrel, I—I will ask you to be my friend.”

In context, we can infer that when faced with the fear of death, Ulrich reconsidered the feud.... he wished to put it all behind him before he died.