chore: more cleanup

Author: MaggieKimani1

src/Microsoft.OpenApi/Models/OpenApiComponents.cs

@@ -315,7 +315,7 @@ private void RenderComponents(IOpenApiWriter writer, Action<IOpenApiWriter, IOpe
         {
             var loops = writer.GetSettings().LoopDetector.Loops;
             writer.WriteStartObject();
-            if (loops.TryGetValue(typeof(OpenApiSchema), out var schemas))
+            if (loops.TryGetValue(typeof(OpenApiSchema), out _))
             {
                 writer.WriteOptionalMap(OpenApiConstants.Schemas, Schemas, callback);
             }

src/Microsoft.OpenApi/Validations/Rules/RuleHelpers.cs

@@ -85,13 +85,13 @@ public static void ValidateDataTypeMismatch(
                     return;
                 }
 
-                foreach (var kvp in anyObject)
+                foreach (var key in from kvp in anyObject
+                                    let key = kvp.Key
+                                    select key)
                 {
-                    var key = kvp.Key;
                     context.Enter(key);
-
                     if (schema.Properties != null &&
-                        schema.Properties.TryGetValue(key, out var property))
+                                        schema.Properties.TryGetValue(key, out var property))
                     {
                         ValidateDataTypeMismatch(context, ruleName, anyObject[key], property);
                     }

test/Microsoft.OpenApi.Hidi.Tests/Formatters/PowerShellFormatterTests.cs

@@ -96,7 +96,7 @@ public void ResolveFunctionParameters()
             var walker = new OpenApiWalker(powerShellFormatter);
             walker.Walk(openApiDocument);
 
-            var idsParameter = openApiDocument.Paths["/foo"].Operations?[HttpMethod.Get].Parameters?.Where(static p => p.Name == "ids").FirstOrDefault();
+            var idsParameter = openApiDocument.Paths["/foo"].Operations?[HttpMethod.Get].Parameters?.FirstOrDefault(static p => p.Name == "ids");
 
             // Assert
             Assert.Null(idsParameter?.Content);