test/crypto: fix build with optimization=1

test/crypto: fix build with optimization=1

Fail IPSec ESN and antireplay cases, if there are no packets. Fixes
following warning when using optimization=1 build flag with GCC 11.

../app/test/test_cryptodev.c: In function ‘test_ipsec_pkt_replay’:
../app/test/test_cryptodev.c:10074:15: warning: ‘td_outb’ may be used uninitialized [-Wmaybe-uninitialized]
         ret = test_ipsec_proto_process(td_outb, td_inb, nb_pkts, true,
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                        &flags);
                                        ~~~~~~~
../app/test/test_cryptodev.c:9150:1: note: by argument 1 of type ‘const struct ipsec_test_data[]’ to ‘test_ipsec_proto_process’ declared here
 test_ipsec_proto_process(const struct ipsec_test_data td[],
 ^~~~~~~~~~~~~~~~~~~~~~~~
../app/test/test_cryptodev.c:10056:32: note: ‘td_outb’ declared here
         struct ipsec_test_data td_outb[IPSEC_TEST_PACKETS_MAX];
                                ^~~~~~~

Bugzilla ID: 1032
Fixes: d02c6bfcb99a ("test/crypto: add ESN and antireplay cases")
Cc: stable@dpdk.org
Reported-by: Daxue Gao <daxuex.gao@intel.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Acked-by: Anoob Joseph <anoobj@marvell.com>