[PATCH] selftests/bpf: fix const qualifier in fexit_bpf2bpf test

[Woojin Ji]

prog_name is an array of const char * strings, so strstr() returns a
pointer into const data.

Store the result in a const char * to avoid discarding the const
qualifier.

With GCC 15 this triggers -Werror=discarded-qualifiers and breaks
the build of tools/testing/selftests/bpf.

Signed-off-by: Woojin Ji <random6.xyz@xxxxxxxxx>
---
 tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
index f29fc789c14b..d8225da4c1af 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
@@ -111,7 +111,7 @@ static void test_fexit_bpf2bpf_common(const char *obj_file,
 		struct bpf_link_info link_info;
 		struct bpf_program *pos;
 		const char *pos_sec_name;
-		char *tgt_name;
+		const char *tgt_name;
 		__s32 btf_id;
 
 		tgt_name = strstr(prog_name[i], "/");
-- 
2.53.0