Fixed incorrect variable name

src/modules/SX126x/SX126x.cpp

@@ -18,6 +18,7 @@ int16_t SX126x::begin(float bw, uint8_t sf, uint8_t cr, uint16_t syncWord, float
   _ldro = 0x00;
   _crcType = SX126X_LORA_CRC_ON;
   _preambleLength = preambleLength;
+  _tcxoDelay = 0;
 
   // set mode to standby
   int16_t state = standby();

src/modules/SX126x/SX126x.h

@@ -830,7 +830,7 @@ class SX126x: public PhysicalLayer {
 
     float _dataRate;
 
-    uint32_t _tcxoDelay_us = 0;
+    uint32_t _tcxoDelay;
 
     int16_t config(uint8_t modem);