Attempt to fix TTGO-LoRa32 crash

Author: jacobeva

RNode_Firmware_CE.ino

@@ -17,7 +17,7 @@
 #include <SPI.h>
 #include "Utilities.h"
 
-#if BOARD_MODEL == BOARD_HELTEC32_V3
+#if MCU_VARIANT == MCU_ESP32
 // Default stack size for loop function on Heltec32 V3 is not large enough,
 // must be increased to 11kb to prevent crashes.
 SET_LOOP_TASK_STACK_SIZE(11 * 1024);  // 11KB