Eliminate the following coccicheck warning:
./tools/testing/selftests/ipc/msgque.c:72:3-4: Unneeded semicolon
./tools/testing/selftests/ipc/msgque.c:183:2-3: Unneeded semicolon
./tools/testing/selftests/ipc/msgque.c:191:2-3: Unneeded semicolon
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>