Ensure we repaint the background of windows before redrawing them. This

fixes some issues with incomplete background colors on some operating
system / ncurses combinations (e.g. FreeBSD)

src/musikcube/cursespp/Window.cpp

@@ -419,6 +419,7 @@ void Window::Redraw() {
         }
 
         if (this->frame) {
+            this->RepaintBackground();
             this->OnRedraw();
             this->Invalidate();
             this->isDirty = false;