selftests/ipc: remove unneeded semicolon

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 <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>

tools/testing/selftests/ipc/msgque.c

···
 			printf("msgsnd failed (%m)\n");
 			ret = -errno;
 			goto destroy;
-		};
+		}
 	}
 	return 0;
 
···
 				IPC_NOWAIT) != 0) {
 		printf("First message send failed (%m)\n");
 		return -errno;
-	};
+	}
 
 	msgbuf.mtype = ANOTHER_MSG_TYPE;
 	memcpy(msgbuf.mtext, ANOTHER_TEST_STRING, sizeof(ANOTHER_TEST_STRING));
···
 				IPC_NOWAIT) != 0) {
 		printf("Second message send failed (%m)\n");
 		return -errno;
-	};
+	}
 	return 0;
 }