Remove time fraction check from isValid()

Author: bmcdonnell

NTPClient.cpp

@@ -89,9 +89,6 @@ static bool isValid(byte const *ntpPacket)
   unsigned long highWord = word(ntpPacket[16], ntpPacket[17]);
   unsigned long lowWord  = word(ntpPacket[18], ntpPacket[19]);
   unsigned long refTimeInt  = highWord << 16 | lowWord;
-  highWord = word(ntpPacket[20], ntpPacket[21]);
-  lowWord  = word(ntpPacket[22], ntpPacket[23]);
-  unsigned long refTimeFrac = highWord << 16 | lowWord;
 
   byte leapIndicator = ((ntpPacket[0] & 0b11000000) >> 6);
   byte version       = ((ntpPacket[0] & 0b00111000) >> 3);
@@ -105,8 +102,7 @@ static bool isValid(byte const *ntpPacket)
     ((mode ==  4) || (mode ==  5)) && // Mode == server or broadcast
     (stratum       >=  1) &&
     (stratum       <= 15) &&
-    (refTimeInt    !=  0) &&
-    (refTimeFrac   !=  0)
+    (refTimeInt    !=  0)
   );
 }