Remove field initializer

analyzers/src/SonarAnalyzer.Common/SymbolicExecution/Roslyn/States.cs

@@ -107,7 +107,7 @@ static void Append(T[] array, ref T newFirst, ref T newSecond, ref int i, T stat
     public struct Enumerator
     {
         private readonly States<T> states;
-        private int index = 0;
+        private int index;
 
         public Enumerator(States<T> states) => this.states = states;