Checking assembly when checking for String.Concat in Optimizer (#6051)
Checking assembly when checking for String.Concat in Optimizer (#6051)

* Checking assembly when checking for String.Concat in Optimizer

* Don't call TypeRef directly as we don't know if it's a nominal type

brettfo/visualfsharp,brettfo/visualfsharp,cloudRoutine/FSharp.Compiler.Service,dsyme/fsharp,brettfo/visualfsharp,brettfo/visualfsharp,cloudRoutine/FSharp.Compiler.Service,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,cloudRoutine/FSharp.Compiler.Service,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,brettfo/visualfsharp,brettfo/visualfsharp