Store arguments descriptor in ICData. Remove loading of arguments descriptor at unoptimized call si…

runtime/vm/deopt_instructions.cc

Index: runtime/vm/deopt_instructions.cc
===================================================================
--- runtime/vm/deopt_instructions.cc	(revision 24207)
+++ runtime/vm/deopt_instructions.cc	(working copy)
@@ -280,7 +280,7 @@
       // If the deoptimization happened at an IC call, update the IC data
       // to avoid repeated deoptimization at the same site next time around.
       ICData& ic_data = ICData::Handle();
-      CodePatcher::GetInstanceCallAt(pc, code, &ic_data, NULL);
+      CodePatcher::GetInstanceCallAt(pc, code, &ic_data);
       if (!ic_data.IsNull()) {
         ic_data.set_deopt_reason(deopt_context->deopt_reason());
       }