reducing warnings

firmware/hw_layer/can_hw.cpp

@@ -224,6 +224,7 @@ static void writeStateToCan(void) {
 }
 
 static msg_t canThread(void *arg) {
+	(void)arg;
 	chRegSetThreadName("CAN");
 	while (true) {
 		if (engineConfiguration->canWriteEnabled)

firmware/rusefi.cpp

@@ -232,6 +232,7 @@ void runRusEfi(void) {
 }
 
 void chDbgStackOverflowPanic(thread_t *otp) {
+	(void)otp;
 	strcpy(panicMessage, "stack overflow: ");
 #if defined(CH_USE_REGISTRY) || defined(__DOXYGEN__)
 	int p_name_len = strlen(otp->p_name);