From 33e44ed6bef2adc7dbad9ec48d011297a4ed84dc Mon Sep 17 00:00:00 2001
From: Jeremy Lakeman <Jeremy.Lakeman@gmail.com>
Date: Tue, 4 Dec 2012 16:30:01 +1030
Subject: [PATCH] Don't unwatch if the file descriptor is already closed

---
 rhizome_fetch.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/rhizome_fetch.c b/rhizome_fetch.c
index dbc9557c..5f0be4c5 100644
--- a/rhizome_fetch.c
+++ b/rhizome_fetch.c
@@ -982,8 +982,10 @@ static int rhizome_fetch_close(struct rhizome_fetch_slot *slot)
 
   /* close socket and stop watching it */
   unschedule(&slot->alarm);
-  unwatch(&slot->alarm);
-  close(slot->alarm.poll.fd);
+  if (slot->alarm.poll.fd>=0){
+    unwatch(&slot->alarm);
+    close(slot->alarm.poll.fd);
+  }
   slot->alarm.poll.fd = -1;
   slot->alarm.function=NULL;