From 462b351425f260fabf25c1093cbfecc3532df80c Mon Sep 17 00:00:00 2001
From: Stephen Heumann <stephenheumann@gmail.com>
Date: Mon, 5 Sep 2016 21:52:24 -0500
Subject: [PATCH] Report zero-length reads as successful.

I've encountered a server that sometimes sends zero-size cursor updates, which can trigger this case.
---
 vncsession.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vncsession.cc b/vncsession.cc
index b5e88f9..0f9c000 100644
--- a/vncsession.cc
+++ b/vncsession.cc
@@ -351,6 +351,8 @@ BOOLEAN DoReadTCP (unsigned long dataLength) {
     static srBuff theSRBuff;
     static rrBuff theRRBuff;
 
+    if (dataLength == 0)
+        return TRUE;
     DoneWithReadBuffer();
     TCPIPPoll();