From: Neil Brown <neilb@suse.de>
Date: Wed, 9 May 2012 03:10:03 +0000 (+1000)
Subject: browse: fix buffer underflow when closing directories.
X-Git-Tag: v0.9~25
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=987117a4ed04bdb853712a55ab3c86066143cdab;p=wiggle.git

browse: fix buffer underflow when closing directories.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/vpatch.c b/vpatch.c
index b8586fc..d516337 100644
--- a/vpatch.c
+++ b/vpatch.c
@@ -2121,6 +2121,8 @@ static int get_next(int pos, struct plist *pl, int n, int mode,
 			if (pos >= 0)
 				pos = pl[pos].next;
 		}
+		if (pos < 0)
+			return -1;
 		if (pl[pos].calced == 0 && pl[pos].end)
 			calc_one(pl+pos, f, reverse);
 		if (pl[pos].last >= 0)