[LyX/master] Windows compilation fix

[Juergen Spitzmueller]

commit 1e42af6c44f0a3f6a70789426d74d76b05a203dd
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Fri May 31 14:27:39 2013 +0200

    Windows compilation fix

diff --git a/src/frontends/qt4/GuiPrefs.cpp b/src/frontends/qt4/GuiPrefs.cpp
index b53384d..d4f5d8b 100644
--- a/src/frontends/qt4/GuiPrefs.cpp
+++ b/src/frontends/qt4/GuiPrefs.cpp
@@ -2527,7 +2527,6 @@ PrefUserInterface::PrefUserInterface(GuiPreferences * 
form)
 
 #if (!defined Q_WS_X11 || QT_VERSION < 0x040600)
        useSystemThemeIconsCB->hide();
-       themeIconsLA->hide();
 #endif
 }