Fix div by zero in common-light.h

RGBtoHSV() could cause a div by zero if no color was detected. Thanks R J McNamara for reporting it.
botbench · Feb 25, 2015 · af33832 · af33832
1 parent 5be6301
commit af33832
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/common-light.h b/include/common-light.h
@@ -45,7 +45,7 @@ void RGBtoHSV(float red, float green, float blue, float *hue, float *sat, float
   float rgb_max = max3(red, green, blue);
   float rgb_min;
   *value = rgb_max / 2.56;
-  if (value == 0){
+  if ((value == 0) || (rgb_max == 0)){
     *hue = -1;
     *sat = -1;
     return;