selftests/x86/ldt_gdt: remove unneeded semicolon

Eliminate the following coccicheck warning:
./tools/testing/selftests/x86/ldt_gdt.c:610:2-3: Unneeded semicolon

Reported-by: Abaci Robot <[e-mail]>
Signed-off-by: Yang Li <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>

tools/testing/selftests/x86/ldt_gdt.c

···
 
 		failures++;
 		asm volatile ("mov %0, %%ss" : : "rm" (orig_ss));
-	};
+	}
 
 	ftx = 100;  /* Kill the thread. */
 	syscall(SYS_futex, &ftx, FUTEX_WAKE, 0, NULL, NULL, 0);