util: fix nested proxy inspection #1773

Job	Run time
Build slim tarball	1m 35s
x86_64-linux: with shared libraries	28m 54s
aarch64-linux: with shared libraries	24m 15s
aarch64-darwin: with shared libraries	23m 52s
x86_64-darwin: with shared libraries	44m 37s
	2h 3m 13s

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