Merge pull request #4606: FIX(plugin): initialize array to prevent warning

When building on CentOS 8 with default flags which includes Wall flag,
build stops because array n[3] is not initialized. Initialize it to have all
values to be zero.

plugins/ut99/ut99.cpp

@@ -62,7 +62,7 @@ static void norm(float *a) {
 }
 
 static bool correctFront(float *front, float *top) {
-	float n[3];
+	float n[3] = {0};
 
 	if (top[1] < 0) {
 		front[0] *= -1;