btf_encoder: Fix handling of restrict qualifier

Fixes: 48efa92933e8 ("btf_encoder: Use libbpf APIs to encode BTF type info")
Change-Id: I7eab8889281bb807b8bd3c1f9c649dc1c7214780
Signed-off-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Matthias Maennich <maennich@google.com>
1 file changed