whitespace fixes

remove trailing spaces & expand tabs.

Change-Id: I05ef110abed90f13b47752760ffb4567a11a6a5e
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>

src/plugins/qt7/qt7videooutput.mm

@@ -47,10 +47,10 @@ QT_USE_NAMESPACE
 
 /*
 QT7VideoOutputControl::QT7VideoOutputControl(QObject *parent)
-   :QVideoOutputControl(parent), 
+   :QVideoOutputControl(parent),
     m_session(0),
     m_output(QVideoOutputControl::NoOutput)
-{    
+{
 }
 
 QT7VideoOutputControl::~QT7VideoOutputControl()