gasyncqueue: Add missing (nullable) annotation to free function
As spotted by Nitin Wartkar in !2170 (comment 1195878).
Signed-off-by: Philip Withnall pwithnall@endlessos.org
As spotted by Nitin Wartkar in !2170 (comment 1195878).
Signed-off-by: Philip Withnall pwithnall@endlessos.org