selftests/landlock: Fix missing semicolon

Add missing semicolon after EXPECT_EQ(0, close(stream_server_child)) in
the scoped_vs_unscoped test. I suspect currently it's just not executing
the close statement after the line, but this causes no observable
difference.

Fixes: fefcf0f7cf47 ("selftests/landlock: Test abstract UNIX socket scoping")
Cc: Tahera Fahimi <[e-mail]>
Signed-off-by: Tingmao Wang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mickaël Salaün <[e-mail]>

tools/testing/selftests/landlock/scoped_abstract_unix_test.c

···
 
 		ASSERT_EQ(1, write(pipe_child[1], ".", 1));
 		ASSERT_EQ(grand_child, waitpid(grand_child, &status, 0));
-		EXPECT_EQ(0, close(stream_server_child))
+		EXPECT_EQ(0, close(stream_server_child));
 		EXPECT_EQ(0, close(dgram_server_child));
 		return;
 	}