app_server: add another missing dependency on freetype

src/servers/app/Jamfile

@@ -34,9 +34,9 @@ local font_src =
 UseBuildFeatureHeaders freetype ;
 Includes [ FGristFiles AppServer.cpp BitmapManager.cpp Canvas.cpp
 	ClientMemoryAllocator.cpp Desktop.cpp DesktopSettings.cpp
-	DrawState.cpp DrawingEngine.cpp Layer.cpp ServerApp.cpp
-	ServerBitmap.cpp ServerCursor.cpp ServerFont.cpp ServerPicture.cpp
-	ServerWindow.cpp View.cpp Window.cpp WorkspacesView.cpp
+	DrawState.cpp DrawingEngine.cpp Layer.cpp PictureBoundingBoxPlayer.cpp
+	ServerApp.cpp ServerBitmap.cpp ServerCursor.cpp ServerFont.cpp
+	ServerPicture.cpp ServerWindow.cpp View.cpp Window.cpp WorkspacesView.cpp
 	$(decorator_src) $(font_src) ]
 	: [ BuildFeatureAttribute freetype : headers ] ;