Matthew Jones ea4116f5bd LibGUI+LibGfx+WindowServer: Sanity check window size dimensions ...

Previous to this commit, if a `Window` wanted to set its width or height
greater than `INT16_MAX` (32768), both the application owning the Window
and the WindowServer would crash.

The root of this issue is that `size_would_overflow` check in `Bitmap`
has checks for `INT16_MAX`, and `Window.cpp:786` that is called by
`Gfx::Bitmap::create_with_anonymous_buffer` would get null back, then
causing a chain of events resulting in crashes.

Crashes can still occur but with `VERIFY` and `did_misbehave` the
causes of the crash can be more readily identified.

2021-06-02 23:59:57 +01:00

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