add missing header, forgotten because of the Qt precompiled headers

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15641 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/src/frontends/qt4/GuiView.C b/src/frontends/qt4/GuiView.C
index ddaae6e02361468adb519c5e22538b3fb0319ce0..b4d89eb4af083cc40e6b3715888e0edae0166326 100644 (file)
--- a/src/frontends/qt4/GuiView.C
+++ b/src/frontends/qt4/GuiView.C
@@ -50,6 +50,7 @@
 #include <QToolBar>
 #include <QTabBar>
 #include <QDesktopWidget>
+#include <QVBoxLayout>
 
 #include <boost/bind.hpp>