No longer ignore pkaction's return code

Since 0.111, pkaction exits with status 0 on success, see:
https://github.com/polkit-org/polkit/commit/fcc9839608dc757e7630a40635560c2648598c0e



Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

common/polkit-parsing.sh

@@ -48,8 +48,7 @@ gdbus wait --address unix:path=/var/run/dbus/system_bus_socket \
 # As a side effect, this gives a list of actions which _were_ successfully
 # parsed in the test output.
 #
-# pkaction always seems to exit with status 1; ignore that.
-pkaction || true
+pkaction
 
 # Kill polkitd so the output actually gets written to TMPFILE. I have no idea
 # why it doesn’t do this in the pipe.