Cells Voltage in CSW should be ok when increasing (could only decrease before)

src/frsky.cpp

@@ -325,8 +325,10 @@ void parseTelemHubByte(uint8_t byte)
         }
         uint8_t cellVolts = (uint8_t)(((((frskyHubData.volts & 0xFF00) >> 8) + ((frskyHubData.volts & 0x000F) << 8)))/10);
         frskyHubData.cellVolts[battnumber] = cellVolts;
-        if (!frskyHubData.minCellVolts || cellVolts < frskyHubData.minCellVolts)
+        if (!frskyHubData.minCellVolts || cellVolts < frskyHubData.minCellVolts || battnumber==frskyHubData.minCellIdx) {
+          frskyHubData.minCellIdx = battnumber;
           frskyHubData.minCellVolts = cellVolts;
+        }
       }
       break;
     }

src/frsky.h

@@ -136,8 +136,8 @@ PACK(struct FrskyHubData {
   // end of FrSky Hub data
   uint16_t gpsDistance;
   int16_t  gpsAltitudeOffset;
-  uint8_t  minCellMinVolts;
   uint8_t  varioAltitudeQueuePointer;     // circular-buffer pointer
+  uint8_t  minCellIdx;
 });
 
 #elif defined(WS_HOW_HIGH)