selftests/bpf: Fix typo in verify_umulti_link_info

We verify info.uprobe_multi.flags against wrong kprobe-multi flag
(BPF_F_KPROBE_MULTI_RETURN). It's the same value as the correct
flag (BPF_F_UPROBE_MULTI_RETURN), so there's not functional change.

Fixes: 147c693 ("selftests/bpf: Add link_info test for uprobe_multi link")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>

Author: olsajiri

tools/testing/selftests/bpf/prog_tests/fill_link_info.c

@@ -469,7 +469,7 @@ verify_umulti_link_info(int fd, bool retprobe, __u64 *offsets,
 
 		ASSERT_EQ(info.uprobe_multi.pid, getpid(), "info.uprobe_multi.pid");
 		ASSERT_EQ(info.uprobe_multi.count, 3, "info.uprobe_multi.count");
-		ASSERT_EQ(info.uprobe_multi.flags & BPF_F_KPROBE_MULTI_RETURN,
+		ASSERT_EQ(info.uprobe_multi.flags & BPF_F_UPROBE_MULTI_RETURN,
 			  retprobe, "info.uprobe_multi.flags.retprobe");
 		ASSERT_EQ(info.uprobe_multi.path_size, strlen(path) + 1, "info.uprobe_multi.path_size");
 		ASSERT_STREQ(path_buf, path, "info.uprobe_multi.path");