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>

examples/multimediawidgets/player/player.cpp

@@ -95,7 +95,7 @@ Player::Player(QWidget *parent)
 
     labelDuration = new QLabel(this);
     connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(seek(int)));
-    
+
     labelHistogram = new QLabel(this);
     labelHistogram->setText("Histogram:");
     histogram = new HistogramWidget(this);