From 71912f0564c92889484ef9f69e6cf201b229f2c5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Mon, 23 Jun 2014 09:48:30 +0200
Subject: [PATCH] [klipper] Prevent crash in History::trim if max size is 0

Top would point to an invalid item if the max size is 0.
---
 klipper/history.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/klipper/history.cpp b/klipper/history.cpp
index 823aa36cd..7c9a68f72 100644
--- a/klipper/history.cpp
+++ b/klipper/history.cpp
@@ -92,6 +92,10 @@ void History::trim() {
     if (m_items.size()<=1) {
         m_nextCycle = 0L;
     }
+    if (m_items.isEmpty()) {
+        // force top to nullptr
+        m_top = nullptr;
+    }
     emit changed();
 }