Fixed CompilationRepresentationFlagsEnum test

Author: manofstick

src/fsharp/FSharp.Core.Unittests/FSharp.Core/PrimTypes.fs

@@ -630,7 +630,7 @@ type CompilationRepresentationFlagsEnum() =
 
     [<Test>]
     member this.Getvalue() =
-        let names = [| "None";"Static";"Instance";"ModuleSuffix";"UseNullAsTrueValue";"Event" |]
+        let names = [| "None";"Static";"Instance";"ModuleSuffix";"UseNullAsTrueValue";"Event";"UseVirtualTag" |]
         Assert.AreEqual(names, SourceConstructFlags.GetNames(typeof<CompilationRepresentationFlags>))
 #endif