Merge pull request openenergymonitor#47 from xkr47/patch-2

Remove unnecessary variable

EmonLib.cpp

@@ -77,15 +77,13 @@ void EnergyMonitor::calcVI(unsigned int crossings, unsigned int timeout)
   //-------------------------------------------------------------------------------------------------------------------------
   // 1) Waits for the waveform to be close to 'zero' (mid-scale adc) part in sin curve.
   //-------------------------------------------------------------------------------------------------------------------------
-  boolean st=false;                                  //an indicator to exit the while loop
-
   unsigned long start = millis();    //millis()-start makes sure it doesnt get stuck in the loop if there is an error.
 
-  while(st==false)                                   //the while loop...
+  while(1)                                   //the while loop...
   {
     startV = analogRead(inPinV);                    //using the voltage waveform
-    if ((startV < (ADC_COUNTS*0.55)) && (startV > (ADC_COUNTS*0.45))) st=true;  //check its within range
-    if ((millis()-start)>timeout) st = true;
+    if ((startV < (ADC_COUNTS*0.55)) && (startV > (ADC_COUNTS*0.45))) break;  //check its within range
+    if ((millis()-start)>timeout) break;
   }
 
   //-------------------------------------------------------------------------------------------------------------------------