lib: fix lint in internal/webstreams/util.js #5593

Job	Run time
Build slim tarball	2m 0s
aarch64-darwin: with shared libraries	19m 40s
aarch64-linux: with shared libraries	18m 33s
x86_64-linux: with shared libraries	22m 19s
x86_64-darwin: with shared libraries	33m 40s
Build slim tarball	2m 0s
aarch64-linux: with shared libraries	17m 11s
x86_64-linux: with shared libraries	20m 0s
aarch64-darwin: with shared libraries	19m 40s
x86_64-darwin: with shared libraries	33m 40s
aarch64-linux: with shared libraries	8s
x86_64-linux: with shared libraries	8s
Build slim tarball	2m 0s
aarch64-darwin: with shared libraries	19m 40s
x86_64-darwin: with shared libraries	33m 40s
Build slim tarball	2m 35s
aarch64-darwin: with shared libraries	16m 18s
aarch64-linux: with shared libraries	16m 56s
x86_64-linux: with shared libraries	19m 10s
x86_64-darwin: with shared libraries	29m 21s
	5h 28m 39s

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