Using memory on the stack instead of on the heap by calling malloc
also avoid memory leak in case of test case failures
Fixes: 88d0e47880ec ("raw/skeleton: fix memory leak on test failure")
Cc: stable@dpdk.org
Signed-off-by: Thinh Tran <thinhtr@linux.vnet.ibm.com>
Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>