From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 26 Jul 2012 14:34:06 +0000 (-0400)
Subject: Avoid possible needless call to writev. Found by coverity.
X-Git-Tag: release-2.0.20-stable~11
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6a4ec5c2b580a6174f2713ba1743e76851e1ca3c;p=libevent

Avoid possible needless call to writev. Found by coverity.
---

diff --git a/buffer.c b/buffer.c
index ff64aede..5fecb25b 100644
--- a/buffer.c
+++ b/buffer.c
@@ -2263,6 +2263,8 @@ evbuffer_write_iovec(struct evbuffer *buffer, evutil_socket_t fd,
 		}
 		chain = chain->next;
 	}
+	if (! i)
+		return 0;
 #ifdef WIN32
 	{
 		DWORD bytesSent;