From c348278854db03a615f34c2de0a3299c6af7c6d2 Mon Sep 17 00:00:00 2001
From: zeljko <zeljko@lazarus-ide.org>
Date: Wed, 3 Sep 2014 10:38:42 +0000
Subject: [PATCH] Qt, Gtk2: fixed crash with popup window when form is
 maximized. issue #26670

git-svn-id: trunk@46115 -
---
 lcl/interfaces/gtk2/gtk2widgetset.inc | 3 ++-
 lcl/interfaces/qt/qtx11.inc           | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lcl/interfaces/gtk2/gtk2widgetset.inc b/lcl/interfaces/gtk2/gtk2widgetset.inc
index 13d6d8426c..1b2b2ddf20 100644
--- a/lcl/interfaces/gtk2/gtk2widgetset.inc
+++ b/lcl/interfaces/gtk2/gtk2widgetset.inc
@@ -4497,7 +4497,8 @@ begin
             break;
           inc(Data);
         end;
-        XFree(Data);
+        if nitemsReturned > 0 then
+          XFree(Data);
         Data := nil;
       end;
     end;
diff --git a/lcl/interfaces/qt/qtx11.inc b/lcl/interfaces/qt/qtx11.inc
index 6bdaff4d22..26a0111c22 100644
--- a/lcl/interfaces/qt/qtx11.inc
+++ b/lcl/interfaces/qt/qtx11.inc
@@ -301,7 +301,8 @@ begin
             break;
           inc(Data);
         end;
-        XFree(Data);
+        if nitemsReturned > 0 then
+          XFree(Data);
         Data := nil;
       end;
     end;