Fix up X,Y values in BufView

Let's return absolute X, Y values, rather than relative to the bufwindow.

internal/display/bufwindow.go

@@ -99,8 +99,8 @@ func (w *BufWindow) IsActive() bool {
 // ruler, scrollbar and statusline.
 func (w *BufWindow) BufView() View {
 	return View{
-		X:         w.gutterOffset,
-		Y:         0,
+		X:         w.X + w.gutterOffset,
+		Y:         w.Y,
 		Width:     w.bufWidth,
 		Height:    w.bufHeight,
 		StartLine: w.StartLine,

internal/display/infowindow.go

@@ -75,7 +75,7 @@ func (i *InfoWindow) LocFromVisual(vloc buffer.Loc) buffer.Loc {
 func (i *InfoWindow) BufView() View {
 	return View{
 		X:         0,
-		Y:         0,
+		Y:         i.Y,
 		Width:     i.Width,
 		Height:    1,
 		StartLine: SLoc{0, 0},