Fix Alexa not turning off white channel (fixes #1012)

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ### Development versions after 0.10.0 release
 
+#### Build 2006250
+
+-   Fix Alexa not turning off white channel (fixes #1012)
+
 #### Build 2006220
 
 -   Added Sunrise nightlight mode

wled00/alexa.cpp

@@ -85,6 +85,7 @@ void onAlexaChange(EspalexaDevice* dev)
       col[0] = ((color >> 16) & 0xFF);
       col[1] = ((color >>  8) & 0xFF);
       col[2] = ( color        & 0xFF);
+      col[3] = 0;
     }
     colorUpdated(NOTIFIER_CALL_MODE_ALEXA);
   }

wled00/wled.h

@@ -8,7 +8,7 @@
  */
 
 // version code in format yymmddb (b = daily build)
-#define VERSION 2006220
+#define VERSION 2006250
 
 // ESP8266-01 (blue) got too little storage space to work with all features of WLED. To use it, you must use ESP8266 Arduino Core v2.4.2 and the setting 512K(No SPIFFS).