When SEND_LG is true and SEND_SAMSUNG is false compilation fails

… because ir_LG.cpp/IRSend::sendLG contains:
```c++
    // LG 32bit protocol is near identical to Samsung except for repeats.
    sendSAMSUNG(data, nbits, 0);  // Send it as a single Samsung message.
    repeatHeaderMark = kLg32RptHdrMark;
    duty = 33;
    repeat++;
```