Fixed no gamma correction for JSON individual LED control

Author: Aircoookie

wled00/json.cpp

@@ -203,7 +203,11 @@ void deserializeSegment(JsonObject elem, byte it, byte presetId)
 
         if (set < 2) stop = start + 1;
         for (uint16_t i = start; i < stop; i++) {
-          strip.setPixelColor(i, rgbw[0], rgbw[1], rgbw[2], rgbw[3]);
+          if (strip.gammaCorrectCol) {
+            strip.setPixelColor(i, strip.gamma8(rgbw[0]), strip.gamma8(rgbw[1]), strip.gamma8(rgbw[2]), strip.gamma8(rgbw[3]));
+          } else {
+            strip.setPixelColor(i, rgbw[0], rgbw[1], rgbw[2], rgbw[3]);
+          }
         }
         if (!set) start++;
         set = 0;