i40e: don't allocate zero size
i40e: don't allocate zero size

Shockingly, the compiler didn't flag this uninitialized variable. This
fixes a potential memory corruption condition where ARQ messages are
written to random memory locations.

Change-Id: Iac82f4562d2bf3f42df3f3b2163d9cbed2160135
Signed-off-by: Mitch Williams <acfbed6236bdabd688e979c4a715822951672d73@intel.com>
Signed-off-by: Jesse Brandeburg <e6047e445db6578741afb14ef640164ef6b65e4f@intel.com>
Tested-by: Sibai Li <7b32709b4fa5663a47e0d1f9518bcee0920157c8@intel.com>
Signed-off-by: Jeff Kirsher <87e35f5be20bb3e67f4ba6b86f5f6be3085b1b3a@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs