remove redundant where

Author: SimonCropp

src/Microsoft.OpenApi.Readers/V2/OpenApiDocumentDeserializer.cs

@@ -323,10 +323,12 @@ public RequestBodyReferenceFixer(IDictionary<string, OpenApiRequestBody> request
         {
             _requestBodies = requestBodies;
         }
+
         public override void Visit(OpenApiOperation operation)
         {
-            var body = operation.Parameters.Where(p => p.UnresolvedReference == true
-            && _requestBodies.ContainsKey(p.Reference.Id)).FirstOrDefault();
+            var body = operation.Parameters.FirstOrDefault(
+                p => p.UnresolvedReference
+                     && _requestBodies.ContainsKey(p.Reference.Id));
 
             if (body != null)
             {

test/Microsoft.OpenApi.Readers.Tests/OpenApiWorkspaceTests/OpenApiWorkspaceStreamTests.cs

@@ -75,10 +75,11 @@ public async Task LoadDocumentWithExternalReferenceShouldLoadBothDocumentsIntoWo
             Assert.False(referencedSchema.UnresolvedReference);
 
             var referencedParameter = result.OpenApiDocument
-                                            .Paths["/todos"]
-                                            .Operations[OperationType.Get]
-                                            .Parameters.Select(p => p.GetEffective(result.OpenApiDocument))
-                                            .Where(p => p.Name == "filter").FirstOrDefault();
+                .Paths["/todos"]
+                .Operations[OperationType.Get]
+                .Parameters
+                .Select(p => p.GetEffective(result.OpenApiDocument))
+                .FirstOrDefault(p => p.Name == "filter");
 
             Assert.Equal("string", referencedParameter.Schema.Type);
         }