Reduce padding in often-used structs

Reduce the padding in some often-used structs for 64bit machines.
32bit machines should also profit from most changes, but to a
lesser degree.

Change-Id: Ic4c67b94e962731de4f31164c52a372d78944ccc
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

src/libs/qmleditorwidgets/gradientline.cpp

@@ -64,8 +64,8 @@ GradientLine::GradientLine(QWidget *parent) :
         m_activeColor(Qt::black),
         m_gradientName(QLatin1String("gradient")),
         m_colorIndex(0),
-        m_dragActive(false),
         m_yOffset(0),
+        m_dragActive(false),
         m_create(false),
         m_active(false),
         m_dragOff(false),