Modify frequencyError() from last RadioHead

RH_RF95.cpp

@@ -615,7 +615,7 @@ int RH_RF95::frequencyError()
 	freqerror |= 0xfff00000;
 
     int error = 0; // In hertz
-    float bw_tab[] = {7.81, 10.42, 15.62, 20.83, 31.25, 41.67, 62.50, 125.00, 250.00, 500.00};
+    float bw_tab[] = {7.8, 10.4, 15.6, 20.8, 31.25, 41.7, 62.5, 125, 250, 500};
     uint8_t bwindex = spiRead(RH_RF95_REG_1D_MODEM_CONFIG1) >> 4;
     if (bwindex < (sizeof(bw_tab) / sizeof(float)))
 	error = (float)freqerror * bw_tab[bwindex] * ((float)(1L << 24) / (float)RH_RF95_FXOSC / 500.0);