[LyX/master] TocWidget: fix part of #9825

[Guillaume Munch]

commit 78a5c877812a522534a79ab81eb37fe9df9bf5e5
Author: Guillaume Munch <g...@lyx.org>
Date:   Mon May 30 22:11:27 2016 +0100

    TocWidget: fix part of #9825

diff --git a/src/frontends/qt4/TocWidget.cpp b/src/frontends/qt4/TocWidget.cpp
index ff929c0..e98786b 100644
--- a/src/frontends/qt4/TocWidget.cpp
+++ b/src/frontends/qt4/TocWidget.cpp
@@ -246,6 +246,7 @@ void TocWidget::on_tocTV_pressed(QModelIndex const & index)
        if (button & Qt::LeftButton) {
                goTo(index);
                gui_view_.setFocus();
+               gui_view_.activateWindow();
        }
 }