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gefs: count all deadlist nodes in dlcount

we missed the deadlist nodes that were loaded from disk
into a newly allocated chunk.

--- a/sys/src/cmd/gefs/snap.c

+++ b/sys/src/cmd/gefs/snap.c

@@ -86,6 +86,7 @@

 	if((dl = dlcacheget(gen, bgen)) != nil)

 		return dl;

 	dl = emalloc(sizeof(Dlist), 1);

+	fs->dlcount++;

 	if(waserror()){

 		fs->dlcount--;

 		free(dl);

@@ -109,7 +110,6 @@

 	dl->hd.addr = -1;

 	dl->tl.addr = -1;

 	dl->ins = nil;

-	fs->dlcount++;

 	m.op = Oinsert;

 	dlist2kv(dl, &m, kvbuf, sizeof(kvbuf));

-- 

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