shithub: Nail

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fix off by one in line number calculation

--- a/mbox.c

+++ b/mbox.c

@@ -120,8 +120,8 @@

 	int i, o, n, d;

 	o = 0;

-	n = 0;

 	d = 0;

+	n = 1;

 	r = msg;

 	if(msg->parent != nil) {

 		m = msg->parent;

@@ -128,7 +128,7 @@

 		for(i = 0; i < m->nchild; i++){

 			if(m->child[i] == msg)

 				break;

-			o += m->child[i]->nsub;

+			o += m->child[i]->nsub + 1;

 		}

 	}

 	while(r->parent != nil){

@@ -150,7 +150,7 @@

 	if(depth != nil)

 		*depth = d;

 	assert(n + o < mbox.nmesg);

-	return n + o + 1;

+	return n + o;

 }

 static int