Fix lightBrightnessStep

code/espurna/light.ino

@@ -508,7 +508,7 @@ unsigned int lightBrightness() {
     return _brightness;
 }
 
-void lightBrightness(unsigned int b) {
+void lightBrightness(int b) {
     _brightness = constrain(b, 0, LIGHT_MAX_BRIGHTNESS);
 }
 

code/espurna/light_ir.ino

@@ -834,7 +834,7 @@ unsigned int lightBrightness() {
 
 // ---------------------------------------------------------------------------------------
 // Set Brightness
-void lightBrightness(unsigned int b) {
+void lightBrightness(int b) {
 	b=constrain(b, 0, 255);
 	DEBUG_MSG_P(PSTR("[WEB|API] Set Brightness to : %d\n"), b);
 	_cur_color.v=b;