Similarly to allocation, do it from an inline function. This allows
tests to only use the headers for allocation/free of timer.
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NGreg Kurz <groug@kaod.org>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>