shithub: gefs

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snap: when updating, there is no successor we want to move the blocks to

--- a/snap.c

+++ b/snap.c

@@ -433,7 +433,7 @@

 	/* this was the last ref to the snap */

 	if(o->nlbl == 0 && o->nsucc == 1){

 		t->prev = o->prev;

-		delsnap(o, t->gen, nil);

+		delsnap(o, -1, nil);

 	}

 	closesnap(o);

 	asetp(r, t);