In icom.c add check for current vfo to avoid vfo swapping

https://github.com/Hamlib/Hamlib/issues/665
https://github.com/Hamlib/Hamlib/issues/654

rigs/icom/icom.c

@@ -2105,7 +2105,7 @@ int icom_get_mode(RIG *rig, vfo_t vfo, rmode_t *mode, pbwidth_t *width)
     // reason is we can't get width without swapping vfos -- yuck!!
     if (width != NULL)
     {
-        if (vfo & (RIG_VFO_A | RIG_VFO_MAIN | RIG_VFO_SUB_A | RIG_VFO_MAIN_A))
+        if (vfo & (RIG_VFO_A | RIG_VFO_MAIN | RIG_VFO_SUB_A | RIG_VFO_MAIN_A | RIG_VFO_CURR))
         {
             // then we get our current vfo..i.e. VFOA
             if (rig->state.current_vfo != RIG_VFO_A)

rigs/icom/icom.h

@@ -30,7 +30,7 @@
 #include <sys/time.h>
 #endif
 
-#define BACKEND_VER "20210418"
+#define BACKEND_VER "20210419"
 
 /*
  * defines used by comp_cal_str in rig.c