Fix Growable array set length intrinsics to check if the incoming value is a Smi, otherwise call na…

runtime/vm/intrinsifier.cc

Index: runtime/vm/intrinsifier.cc
===================================================================
--- runtime/vm/intrinsifier.cc	(revision 11330)
+++ runtime/vm/intrinsifier.cc	(working copy)
@@ -52,6 +52,8 @@
 
 bool Intrinsifier::Intrinsify(const Function& function, Assembler* assembler) {
   if (!FLAG_intrinsify) return false;
+  // Closure functions may have different arguments.
+  if (function.IsClosureFunction()) return false;
   const char* function_name = String::Handle(function.name()).ToCString();
   const Class& function_class = Class::Handle(function.Owner());
   const char* class_name = String::Handle(function_class.Name()).ToCString();