Fix crash with uop_optimizer #648

Job	Run time
Interpreter (Debug)	6m 57s
Free-Threaded (Debug)	10m 10s
i686-pc-windows-msvc/msvc (Debug)	17m 51s
i686-pc-windows-msvc/msvc (Release)	21m 13s
x86_64-pc-windows-msvc/msvc (Debug)	17m 24s
x86_64-pc-windows-msvc/msvc (Release)	21m 17s
aarch64-pc-windows-msvc/msvc (Debug)	5m 25s
aarch64-pc-windows-msvc/msvc (Release)	5m 27s
x86_64-apple-darwin/clang (Debug)	10m 2s
x86_64-apple-darwin/clang (Release)	21m 52s
aarch64-apple-darwin/clang (Debug)	9m 40s
aarch64-apple-darwin/clang (Release)	14m 27s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 35s
x86_64-unknown-linux-gnu/gcc (Release)	1h 30m 13s
x86_64-unknown-linux-gnu/clang (Debug)	7m 45s
x86_64-unknown-linux-gnu/clang (Release)	1h 27m 22s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 14m 52s
aarch64-unknown-linux-gnu/gcc (Release)	37m 55s
aarch64-unknown-linux-gnu/clang (Debug)	1h 7m 38s
aarch64-unknown-linux-gnu/clang (Release)	39m 34s
	9h 34m 39s

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