From 758a883cc6d876646fb31084e361e49b54b89090 Mon Sep 17 00:00:00 2001
From: Archs <sun@archs.tk>
Date: Wed, 4 Mar 2015 00:28:18 +0800
Subject: [PATCH] set the correct length for s.data when data truely increased

---
 lib/pure/streams.nim | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/pure/streams.nim b/lib/pure/streams.nim
index 1ba0fb9aaf..e706f20160 100644
--- a/lib/pure/streams.nim
+++ b/lib/pure/streams.nim
@@ -226,8 +226,8 @@ proc ssWriteData(s: Stream, buffer: pointer, bufLen: int) =
   var s = StringStream(s)
   if bufLen <= 0:
     return
-  if s.pos + bufLen > s.data.len():
-    setLen(s.data, s.data.len + bufLen)
+  if s.pos + bufLen > s.data.len:
+    setLen(s.data, s.pos + bufLen)
   copyMem(addr(s.data[s.pos]), buffer, bufLen)
   inc(s.pos, bufLen)