Test

fix: avoid to visit nullptr in binaryen #4895

Job	Run time
Check	6s
Bootstrap (release)	4m 59s
Features	25s
Bootstrap (debug)	4m 16s
Compiler (ubuntu, node lts/*)	1m 56s
Runtimes	33s
Coverage	4m 5s
Compiler (windows, node current)	1m 52s
Compiler (ubuntu, node current)	1m 43s
Compiler (windows, node lts/*)	2m 8s
Compiler (macos, node current)	2m 13s
Loader	22s
Compiler (macos, node lts/*)	1m 28s
	26m 6s

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