From d60e86ef73cd2b5aa5a3b027495dc328e85050cf Mon Sep 17 00:00:00 2001
From: El <eldargafiyatov@gmail.com>
Date: Wed, 22 Apr 2026 09:52:54 +0000
Subject: [PATCH] VNC-151 Simplify timeval diff calculation

---
 common/rfb/util.cxx | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/common/rfb/util.cxx b/common/rfb/util.cxx
index b10d56f..cd15015 100644
--- a/common/rfb/util.cxx
+++ b/common/rfb/util.cxx
@@ -556,8 +556,7 @@ namespace rfb {
       unsigned diff = (second->tv_sec - first->tv_sec) * 1000;
 
       if constexpr (std::is_same_v<T, timeval>) {
-          diff += second->tv_usec / 1000;
-          diff -= first->tv_usec / 1000;
+          diff += (second->tv_usec - first->tv_usec) / 1000;
       } else {
           diff += (second->tv_nsec - first->tv_nsec) / 1000000;
       }