From 0a794f390f597447d8b8411c9e5d5ee7fb22ba76 Mon Sep 17 00:00:00 2001
From: Eric House <eehouse@eehouse.org>
Date: Fri, 28 Jun 2013 18:47:11 -0700
Subject: [PATCH] fix off-by-one error leading to malformed queries

---
 xwords4/relay/xwrelay.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/xwords4/relay/xwrelay.cpp b/xwords4/relay/xwrelay.cpp
index 05c7a8ece..d6572102c 100644
--- a/xwords4/relay/xwrelay.cpp
+++ b/xwords4/relay/xwrelay.cpp
@@ -1428,17 +1428,17 @@ void
 string_printf( string& str, const char* fmt, ... )
 {
     const int origsiz = str.size();
-    int newsiz = 100;
+    int addsiz = 100;
     va_list ap;
     for ( ; ; ) {
-        str.resize( origsiz + newsiz );
+        str.resize( origsiz + addsiz );
 
         va_start( ap, fmt );
-        int len = vsnprintf( (char *)str.c_str() + origsiz, newsiz, fmt, ap );
+        int len = vsnprintf( (char *)str.c_str() + origsiz, addsiz, fmt, ap );
         va_end( ap );
 
-        if ( len > newsiz ) {   // needs more space
-            newsiz = len + 1;
+        if ( len >= addsiz ) {   // needs more space
+            addsiz = len + 1;
         } else if ( -1 == len ) {
             assert(0);          // should be impossible
         } else {