Fix another deprecation warning with libtorrent v0.16

src/qtlibtorrent/qtorrenthandle.cpp

@@ -471,6 +471,15 @@ bool QTorrentHandle::is_auto_managed() const {
 #endif
 }
 
+bool is_sequential_download() const {
+#if LIBTORRENT_VERSION_MINOR > 15
+  torrent_status status = torrent_handle::status(0x0);
+  return status.sequential_download;
+#else
+  return torrent_handle::is_sequential_download();
+#endif
+}
+
 qlonglong QTorrentHandle::active_time() const {
 #if LIBTORRENT_VERSION_MINOR > 15
   return torrent_handle::status(0x0).active_time;

src/qtlibtorrent/qtorrenthandle.h

@@ -104,6 +104,7 @@ public:
   bool is_seed() const;
   bool is_checking() const;
   bool is_auto_managed() const;
+  bool is_sequential_download() const;
   qlonglong active_time() const;
   qlonglong seeding_time() const;
   QString creation_date() const;