fix receiving a PATH_ABANDON closing the path on which it came from #108

Job	Run time
android_ndk_lts (aarch64-linux-android)	55s
android_ndk_lts (armv7-linux-androideabi)	1m 6s
docker	3m 11s
android_ndk_lts (x86_64-linux-android)	50s
http3_test	44s
nginx (1.16.1)	50s
android_ndk_lts (i686-linux-android)	56s
quiche	53s
quiche_ios (x86_64-apple-ios)	1m 9s
quiche_macos (macos-13)	1m 23s
quiche (boringssl-boring-crate)	1m 5s
quiche_ios (aarch64-apple-ios)	1m 28s
quiche_multiarch (aarch64-unknown-linux-gnu)	1m 15s
quiche_macos (macos-latest)	1m 11s
quiche_multiarch (armv7-unknown-linux-gnueabihf)	1m 21s
quiche (openssl)	1m 10s
quiche_multiarch (i686-unknown-linux-gnu)	1m 17s
quiche_windows (x86_64-pc-windows-msvc)	2m 39s
quiche_windows (i686-pc-windows-msvc)	2m 33s
quiche_windows (x86_64-pc-windows-gnu)	2m 38s
quiche_windows (i686-pc-windows-gnu)	2m 39s
	31m 13s

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