[LyX/master] Do not pass objects by value

[Jean-Marc]

commit 92d5e7c11b68c3bada7a37340d231568a0d453da
Author: Jean-Marc <lasgout...@lyx.org>
Date:   Sat Sep 12 19:22:51 2015 +0200

    Do not pass objects by value
    
    Coverity issue 23372.

diff --git a/src/frontends/qt4/CustomizedWidgets.cpp 
b/src/frontends/qt4/CustomizedWidgets.cpp
index dd87c84..b6dc73f 100644
--- a/src/frontends/qt4/CustomizedWidgets.cpp
+++ b/src/frontends/qt4/CustomizedWidgets.cpp
@@ -86,7 +86,7 @@ KeySequence const ShortcutWidget::getKeySequence() const
 }
 
 
-void ShortcutWidget::setKeySequence(lyx::KeySequence const s)
+void ShortcutWidget::setKeySequence(lyx::KeySequence const & s)
 {
        keysequence_ = s;
 }
diff --git a/src/frontends/qt4/CustomizedWidgets.h 
b/src/frontends/qt4/CustomizedWidgets.h
index 0741a64..6104d30 100644
--- a/src/frontends/qt4/CustomizedWidgets.h
+++ b/src/frontends/qt4/CustomizedWidgets.h
@@ -33,7 +33,7 @@ public:
        void reset();
        bool eventFilter(QObject*, QEvent* e );
        KeySequence const getKeySequence() const;
-       void setKeySequence(lyx::KeySequence const s);
+       void setKeySequence(lyx::KeySequence const & s);
        void removeFromSequence();
 protected Q_SLOTS:
        bool event(QEvent* e);