Fix torrent availability computation

src/pieceavailabilitybar.h

@@ -51,7 +51,7 @@ public:
     setFixedHeight(BAR_HEIGHT);
   }
 
-  double setAvailability(const std::vector<int>& avail) {
+  void setAvailability(const std::vector<int>& avail) {
     double average = 0;
     if(avail.empty()) {
       // Empty bar
@@ -95,7 +95,6 @@ public:
       }
     }
     update();
-    return average;
   }
 
   void clear() {

src/propertieswidget.cpp

@@ -355,8 +355,8 @@ void PropertiesWidget::loadDynamicData() {
           showPiecesAvailability(true);
           std::vector<int> avail;
           h.piece_availability(avail);
-          double avail_average =  pieces_availability->setAvailability(avail);
+          pieces_availability->setAvailability(avail);
-          avail_average_lbl->setText(QString::number(avail_average, 'f', 1));
+          avail_average_lbl->setText(QString::number(h.get_torrent_handle().status().distributed_copies, 'f', 1));
         } else {
           showPiecesAvailability(false);
         }