fix the refcount on the list #2257

Job	Run time
downstream	43m 11s
localhost-test-macos (kqueue)	1m 2s
clang-sanitizers (,address,undefined)	4m 42s
localhost-test-win	6m 26s
clang-sanitizers (,thread)	4m 42s
localhost-test-macos (dispatch_queue)	51s
byo-crypto	2m 48s
linux-shared-libs	4m 21s
macos-x64	1m 21s
linux-compat (fedora-34-x64)	3m 29s
macos (dispatch_queue)	54s
windows	4m 26s
linux-compat (al2-x64)	3m 36s
linux-compat (manylinux2014-x86)	5m 36s
linux-compat (opensuse-leap)	4m 36s
windows-vc17 (x86)	4m 17s
linux-compat (manylinux2014-x64)	3m 41s
windows-app-verifier	6m 32s
linux-compat (rhel8-x64)	4m 20s
localhost-test-linux	7m 28s
linux-compiler-compat (clang-10)	5m 8s
linux-compat (manylinux1-x86)	4m 45s
linux-compiler-compat (clang-6)	6m 53s
macos (kqueue)	1m 7s
linux-compiler-compat (gcc-7)	4m 30s
linux-compat (manylinux1-x64)	3m 48s
linux-compiler-compat (gcc-5)	4m 9s
linux-compiler-compat (clang-11)	4m 40s
linux-compiler-compat (gcc-8)	4m 30s
linux-compiler-compat (gcc-6)	4m 27s
linux-compiler-compat (clang-8)	7m 34s
linux-compiler-compat (gcc-4.8)	3m 36s
linux-compiler-compat (gcc-13, --cmake-extra=-DCMAKE_EXE_LINKER_FLAGS="-lresolv")	8m 13s
windows-vc17 (x64)	4m 56s
linux-compiler-compat (gcc-11)	6m 8s
linux-compiler-compat (clang-17)	7m 25s
linux-compiler-compat (clang-15)	5m 38s
linux-compiler-compat (clang-9)	40m 8s
windows-shared-libs	4m 12s
	4h 10m 6s

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