[PATCH] libbpf: fix str_has_sfx()

[Dan Carpenter <dan.carpenter@oracle.com>]

The return from strcmp() is inverted so the it returns true instead
of false and vise versa.

Fixes: a1c9d61b19cb ("libbpf: Improve library identification for uprobe binary path resolution")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Spotted during review.  *cmp() functions should always have a comparison
to zero.
	if (strcmp(a, b) < 0) {  <-- means a < b
	if (strcmp(a, b) >= 0) { <-- means a >= b
	if (strcmp(a, b) != 0) { <-- means a != b
etc.

 tools/lib/bpf/libbpf_internal.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h
index 9cd7829cbe41..008485296a29 100644
--- a/tools/lib/bpf/libbpf_internal.h
+++ b/tools/lib/bpf/libbpf_internal.h
@@ -108,9 +108,9 @@ static inline bool str_has_sfx(const char *str, const char *sfx)
 	size_t str_len = strlen(str);
 	size_t sfx_len = strlen(sfx);
 
-	if (sfx_len <= str_len)
-		return strcmp(str + str_len - sfx_len, sfx);
-	return false;
+	if (sfx_len > str_len)
+		return false;
+	return strcmp(str + str_len - sfx_len, sfx) == 0;
 }
 
 /* Symbol versioning is different between static and shared library.
-- 
2.35.1