JIT

gh-131998: Fix `NULL` dereference when using an unbound method descriptor in a specialized code path #3080

Job	Run time
Interpreter (Debug)	9m 3s
Free-Threaded (Debug) (19)	7m 3s
i686-pc-windows-msvc/msvc (Debug)	6m 49s
i686-pc-windows-msvc/msvc (Release)	6m 49s
x86_64-pc-windows-msvc/msvc (Debug)	6m 55s
x86_64-pc-windows-msvc/msvc (Release)	6m 44s
aarch64-pc-windows-msvc/msvc (Debug)	5m 11s
aarch64-pc-windows-msvc/msvc (Release)	6m 48s
x86_64-apple-darwin/clang (Debug)	7m 12s
x86_64-apple-darwin/clang (Release)	7m 5s
aarch64-apple-darwin/clang (Debug)	7m 8s
aarch64-apple-darwin/clang (Release)	7m 4s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 4s
x86_64-unknown-linux-gnu/gcc (Release)	6m 41s
aarch64-unknown-linux-gnu/gcc (Debug)	6m 37s
aarch64-unknown-linux-gnu/gcc (Release)	5m 42s
	1h 49m 55s

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