[bug report] selftests/bpf: specify expected instructions in test_verifier tests

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

Hello Eduard Zingerman,

This is a semi-automatic email about new static checker warnings.

The patch 933ff53191eb: "selftests/bpf: specify expected instructions 
in test_verifier tests" from Jun 21, 2022, leads to the following 
Smatch complaint:

    ./tools/testing/selftests/bpf/test_verifier.c:1365 get_xlated_program()
    warn: variable dereferenced before check 'buf' (see line 1364)

./tools/testing/selftests/bpf/test_verifier.c
  1363		*cnt = xlated_prog_len / buf_element_size;
  1364		*buf = calloc(*cnt, buf_element_size);
  1365		if (!buf) {

This should be if (!*buf) {

  1366			perror("can't allocate xlated program buffer");
  1367			return -ENOMEM;

regards,
dan carpenter