Fix new diagnostics

src/Analyzers/MSTest.Analyzers/RoslynAnalyzerHelpers/ArrayBuilder.Enumerator.cs

@@ -2,39 +2,38 @@
 
 #pragma warning disable CA1710 // Rename Microsoft.CodeAnalysis.ArrayBuilder<T> to end in 'Collection'.
 
-namespace Analyzer.Utilities.PooledObjects
+namespace Analyzer.Utilities.PooledObjects;
+
+internal partial class ArrayBuilder<T>
 {
-    internal partial class ArrayBuilder<T>
+    /// <summary>
+    /// struct enumerator used in foreach.
+    /// </summary>
+    internal struct Enumerator : IEnumerator<T>
     {
-        /// <summary>
-        /// struct enumerator used in foreach.
-        /// </summary>
-        internal struct Enumerator : IEnumerator<T>
-        {
-            private readonly ArrayBuilder<T> _builder;
-            private int _index;
+        private readonly ArrayBuilder<T> _builder;
+        private int _index;
 
-            public Enumerator(ArrayBuilder<T> builder)
-            {
-                _builder = builder;
-                _index = -1;
-            }
+        public Enumerator(ArrayBuilder<T> builder)
+        {
+            _builder = builder;
+            _index = -1;
+        }
 
-            public readonly T Current => _builder[_index];
+        public readonly T Current => _builder[_index];
 
-            public bool MoveNext()
-            {
-                _index++;
-                return _index < _builder.Count;
-            }
+        public bool MoveNext()
+        {
+            _index++;
+            return _index < _builder.Count;
+        }
 
-            public readonly void Dispose()
-            {
-            }
+        public readonly void Dispose()
+        {
+        }
 
-            readonly object? System.Collections.IEnumerator.Current => Current;
+        readonly object? System.Collections.IEnumerator.Current => Current;
 
-            public void Reset() => _index = -1;
-        }
+        public void Reset() => _index = -1;
     }
 }