Web UI - Magnet links aren't added with multiple newlines

[Mave95]

trafficstars

qBittorrent version and Operating System

qbittorrent-nox 4.3.0-1 Arch

If on linux, libtorrent-rasterbar and Qt version

libtorrent-rasterbar 1:1.2.10-2 qt5-base 5.15.1-3

What is the problem

Torrents are not downloaded when trying to add them via their Magnet links with more than one newline before, after or between them.

What is the expected behavior

The Torrents should be added even with multiple newlines in the textarea

Steps to reproduce

File -> Add Torrent Link... -> Put one Magnet link and two newlines in the textarea -> Download

Extra info(if any)

I can't reproduce the problem on Windows with Qt UI

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[FranciscoPombal]

Confirmed. Reproduced on Ubuntu 18.04 with qBittorrent master (73e9dce143a88508612392db84726e3344bc0c0f), boost 1.74, libtorrent RC_1_2 (cc73335), Qt 5.9.5 (from repository).

[NoraCodes]

This also affects me, very frustrating when e.g. downloading multiple versions of the same ISO etc.

On NixOS 22.05, qBittorrent v4.4.3.1 64-bit

[thalieht]

Can't reproduce in 4.5.3. I think it's fixed by #16579. Duplicate of #11298