Qt, playlist: rename a method to match Qt's style

modules/gui/qt4/components/playlist/playlist.cpp

@@ -230,7 +230,7 @@ void PlaylistWidget::changeView( const QModelIndex& index )
 {
     searchEdit->clear();
     locationBar->setIndex( index );
-    int i = mainView->getViewNumber();
+    int i = mainView->currentViewIndex();
     viewActions[i]->setChecked(true);
 }
 

modules/gui/qt4/components/playlist/standardpanel.cpp

@@ -378,7 +378,7 @@ void StandardPLPanel::showView( int i_view )
     gotoPlayingItem();
 }
 
-const int StandardPLPanel::getViewNumber()
+const int StandardPLPanel::currentViewIndex()
 {
     if( currentView == treeView )
         return TREE_VIEW;

modules/gui/qt4/components/playlist/standardpanel.hpp

@@ -67,7 +67,7 @@ public:
            PICTUREFLOW_VIEW,
            VIEW_COUNT };
 
-    const int getViewNumber();
+    const int currentViewIndex();
 
 protected: