Fix CodeQL warnings

Author: commonsensesoftware

src/AspNet/WebApi/src/Asp.Versioning.WebApi/ApiVersionRequestProperties.cs

@@ -64,14 +64,7 @@ public string? RawRequestedApiVersion
         }
         set
         {
-            if ( string.IsNullOrEmpty( value ) )
-            {
-                rawApiVersions = default;
-            }
-            else
-            {
-                rawApiVersions = new[] { value! };
-            }
+            rawApiVersions = string.IsNullOrEmpty( value ) ? default : new[] { value! };
         }
     }
 

src/AspNet/WebApi/src/Asp.Versioning.WebApi/Dispatcher/ApiVersionControllerSelector.cs

@@ -128,7 +128,6 @@ public virtual IDictionary<string, HttpControllerDescriptor> GetControllerMappin
             return controller;
         }
 
-        var configuration = request.GetConfiguration();
         var routes = configuration.Routes;
         var context = request.GetRequestContext();
         var virtualPathRoot = routes.VirtualPathRoot;
@@ -156,7 +155,6 @@ public virtual IDictionary<string, HttpControllerDescriptor> GetControllerMappin
 
     private IDictionary<string, HttpControllerDescriptor> InitializeControllerInfoCache()
     {
-        var options = configuration.GetApiVersioningOptions();
         var implicitVersionModel = new ApiVersionModel( options.DefaultApiVersion );
         var conventions = options.Conventions;
         var actionSelector = configuration.Services.GetActionSelector();