From b678b4e0483448605f90be386141323d6d4a19d0 Mon Sep 17 00:00:00 2001
From: Audrius Butkevicius <audrius.butkevicius@gmail.com>
Date: Tue, 5 Apr 2016 06:12:17 +0100
Subject: [PATCH] cmd/syncthing: Skip a calculation if timediff is zero (fixes
 #2854)

---
 cmd/syncthing/gui_windows.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmd/syncthing/gui_windows.go b/cmd/syncthing/gui_windows.go
index 3da56bc71..c4afeb1a1 100644
--- a/cmd/syncthing/gui_windows.go
+++ b/cmd/syncthing/gui_windows.go
@@ -42,6 +42,10 @@ func trackCPUUsage() {
 
 		curTime := time.Now().UnixNano()
 		timeDiff := curTime - prevTime
+		// This is sometimes 0, no clue why.
+		if timeDiff == 0 {
+			continue
+		}
 		curUsage := ktime.Nanoseconds() + utime.Nanoseconds()
 		usageDiff := curUsage - prevUsage
 		cpuUsageLock.Lock()