Add NULL check for the turbo decoder and encoder input length.
Fixes: 3bfc5f60403 ("baseband/acc100: add debug function to validate input")
Cc: stable@dpdk.org
Signed-off-by: Hernan Vargas <hernan.vargas@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>