test: Add missing test cleanup for the last sysext test

The last sysext test leaked things into new tests added later,
uncovered by any new tests leftover check.
Remove the mutable folder state through a trap as done in other tests.

diff --git a/test/units/TEST-50-DISSECT.sysext.sh b/test/units/TEST-50-DISSECT.sysext.sh
index 097e62df80fe7664380f09e69cb642f75336cec1..f8472f5d3012fe1c591bee25cb3ade3861ea967f 100755 (executable)
--- a/test/units/TEST-50-DISSECT.sysext.sh
+++ b/test/units/TEST-50-DISSECT.sysext.sh
@@ -1130,10 +1130,13 @@ extension_verify_after_unmerge "$fake_root" "$hierarchy" -h
 fake_root=${roots_dir:+"$roots_dir/mutable-directory-with-invalid-permissions"}
 hierarchy=/opt
 extension_data_dir="$fake_root/var/lib/extensions.mutable$hierarchy"
+extension_data_dir_usr="$fake_root/var/lib/extensions.mutable/usr"
 
 prepare_root "$fake_root" "$hierarchy"
 prepare_extension_image "$fake_root" "$hierarchy"
 prepare_extension_mutable_dir "$extension_data_dir"
+prepend_trap "rm -rf ${extension_data_dir@Q}"
+prepend_trap "rm -rf ${extension_data_dir_usr@Q}"
 prepare_hierarchy "$fake_root" "$hierarchy"
 
 old_mode=$(stat --format '%#a' "$fake_root$hierarchy")