From 49078b178f2727fece75d684cdc1cd700d10d8ec Mon Sep 17 00:00:00 2001
From: patrik <patrik@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Sat, 7 Apr 2012 09:10:24 +0000
Subject: [PATCH] fixed deadlock when calling stop and the thread was already
 dead

---
 nselib/httpspider.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/nselib/httpspider.lua b/nselib/httpspider.lua
index 1657a0a17..b0880609a 100644
--- a/nselib/httpspider.lua
+++ b/nselib/httpspider.lua
@@ -818,6 +818,9 @@ Crawler = {
 		local condvar = nmap.condvar(self.response_queue)
 		self.quit = true
 		condvar "signal"
+		if ( coroutine.status(self.thread) == "dead" ) then
+			return
+		end
 		condvar "wait"
 	end
 }