[PATCH] tools/bpftool: silence a static check warning

[Dan Carpenter]

There is a static checker warning that proglen has an upper bound but no
lower bound.  The allocation will just fail harmlessly so it's not a big
deal.

Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/tools/bpf/bpf_jit_disasm.c b/tools/bpf/bpf_jit_disasm.c
index 30044bc4f389..2d7bb5dc0b8c 100644
--- a/tools/bpf/bpf_jit_disasm.c
+++ b/tools/bpf/bpf_jit_disasm.c
@@ -205,7 +205,7 @@ static uint8_t *get_last_jit_image(char *haystack, size_t 
hlen,
                regfree(&regex);
                return NULL;
        }
-       if (proglen > 1000000) {
+       if (proglen < 0 || proglen > 1000000) {
                printf("proglen of %d too big, stopping\n", proglen);
                return NULL;
        }