Add x1cx03cmdfails to icom.h

rigs/icom/icom.h

@@ -187,6 +187,7 @@ struct icom_priv_data
     freq_t main_freq; // track last setting of main -- not being used yet
     freq_t sub_freq;  // track last setting of sub -- not being used yet
     int x25cmdfails;  // This will get set if the 0x25 command fails so we try just once
+    int x1cx03cmdfails;  // This will get set if the 0x1c 0x03 command fails so we try just once
 };
 
 extern const struct ts_sc_list r8500_ts_sc_list[];