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: fefcf0f ("selftests/landlock: Test abstract UNIX socket scoping")
Cc: Tahera Fahimi <[email protected]>
Signed-off-by: Tingmao Wang <[email protected]>
Link: https://lore.kernel.org/r/d9e968e4cd4ecc9bf487593d7b7220bffbb3b5f5.1766885035.git.m@maowtm.org
Signed-off-by: Mickaël Salaün <[email protected]>

Author: micromaomao

tools/testing/selftests/landlock/scoped_abstract_unix_test.c

@@ -543,7 +543,7 @@ TEST_F(scoped_vs_unscoped, unix_scoping)
 
 		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;
 	}