Qt: use a less small font on mediainfo.

It seems really unusable on win32
(cherry picked from commit 2d96c40a)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/components/info_panels.cpp

@@ -64,7 +64,7 @@ MetaPanel::MetaPanel( QWidget *parent,
     metaLayout->setVerticalSpacing( 0 );
 
     QFont smallFont = QApplication::font();
-    smallFont.setPointSize( smallFont.pointSize() - 2 );
+    smallFont.setPointSize( smallFont.pointSize() - 1 );
     smallFont.setBold( true );
 
     int line = 0; /* Counter for GridLayout */