JIT

gh-131998: Fix `NULL` dereference when using an unbound method descriptor in a specialized code path #3090

Job	Run time
Interpreter (Debug)	9m 8s
Free-Threaded (Debug) (19)	13m 57s
i686-pc-windows-msvc/msvc (Debug)	20m 11s
i686-pc-windows-msvc/msvc (Release)	12m 11s
x86_64-pc-windows-msvc/msvc (Debug)	20m 14s
x86_64-pc-windows-msvc/msvc (Release)	11m 58s
aarch64-pc-windows-msvc/msvc (Debug)	5m 48s
aarch64-pc-windows-msvc/msvc (Release)	6m 48s
x86_64-apple-darwin/clang (Debug)	15m 25s
x86_64-apple-darwin/clang (Release)	11m 50s
aarch64-apple-darwin/clang (Debug)	10m 59s
aarch64-apple-darwin/clang (Release)	12m 53s
x86_64-unknown-linux-gnu/gcc (Debug)	10m 1s
x86_64-unknown-linux-gnu/gcc (Release)	6m 3s
aarch64-unknown-linux-gnu/gcc (Debug)	7m 51s
aarch64-unknown-linux-gnu/gcc (Release)	6m 22s
	3h 1m 39s

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