Minimize 0x25cmdfails resets to only when satmode changes

https://github.com/Hamlib/Hamlib/issues/741

rigs/icom/icom.c

@@ -5944,7 +5944,11 @@ int icom_get_split_vfo(RIG *rig, vfo_t vfo, split_t *split, vfo_t *tx_vfo)
     if (rig->caps->has_get_func & RIG_FUNC_SATMODE)
     {
         rig_get_func(rig, RIG_VFO_CURR, RIG_FUNC_SATMODE, &satmode);
-        priv->x25cmdfails = satmode; // reset this so it tries again
+        if (satmode != rig->state.cache.satmode)
+        {
+            rig_debug(RIG_DEBUG_VERBOSE, "%s(%d): satmode changed to reset x25cmdfails\n", __func__, __LINE__);
+            priv->x25cmdfails = satmode; // reset this so it tries again
+        }
     }
 
     rig->state.cache.satmode = satmode;

rigs/icom/icom.h

@@ -30,7 +30,7 @@
 #include <sys/time.h>
 #endif
 
-#define BACKEND_VER "20210706"
+#define BACKEND_VER "20210715"
 
 #define ICOM_IS_SECONDARY_VFO(vfo) ((vfo) & (RIG_VFO_B | RIG_VFO_SUB | RIG_VFO_SUB_B | RIG_VFO_MAIN_B))
 #define ICOM_GET_VFO_NUMBER(vfo) (ICOM_IS_SECONDARY_VFO(vfo) ? 0x01 : 0x00)