Avoid possible needless call to writev. Found by coverity.

diff --git a/buffer.c b/buffer.c
index ff64aede05e464bca7184c3731ac9260cfdd29fd..5fecb25b9a60e314c66f35bd648b0621ba1d9fbf 100644 (file)
--- 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;