make vacfs work; thanks to lucho
diff --git a/src/cmd/vac/pack.c b/src/cmd/vac/pack.c
index 074152e..319cb46 100644
--- a/src/cmd/vac/pack.c
+++ b/src/cmd/vac/pack.c
@@ -665,7 +665,7 @@
 	*ri = b;	/* b is the index to insert this entry */
 	memset(me, 0, sizeof(*me));
 
-	return 1;
+	return -1;
 }
 
 void