Ben Wiederhake 768915bbcd LibGUI: Make clipboard bitmap parsing more robust ...

In particular, malicious programs used to be able to set arbitrary
values as "format", which could cause UB (most likely a crash).

Furthermore, we do not transmit palette data, so an application sending
an indexed bitmap cannot possibly expect the other side to receive a
useful image. Therefore, we refuse to build a bitmap.

2021-11-21 11:49:06 +00:00

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