gcc 10.0.1 reports:

../examples/ipsec-secgw/ipsec_process.c: In function ‘ipsec_process’:
../examples/ipsec-secgw/ipsec_process.c:132:34:
error: ‘grp.m’ may be used uninitialized in this function [-Werror=maybe-
uninitialized]
  132 |    grp[n].cnt = pkts + i - grp[n].m;
      |                            ~~~~~~^~

Fix by initializing the array.

Fixes: 3e5f4625dc17 ("examples/ipsec-secgw: make data-path to use IPsec
library")
Cc: stable@dpdk.org

Signed-off-by: Kevin Traynor <redacted>
---
note, commit log violates line length but I didn't want to split warning msg.

Cc: konstantin.ananyev@intel.com
Cc: Radu Nicolau <redacted>
Cc: Akhil Goyal <redacted>
---

Acked-by: Akhil Goyal <redacted>