Use a reserved stack local variable to store the Code object so that it can be looked up easily whe…

vm/disassembler_ia32.cc

Index: vm/disassembler_ia32.cc
===================================================================
--- vm/disassembler_ia32.cc	(revision 7576)
+++ vm/disassembler_ia32.cc	(working copy)
@@ -428,8 +428,7 @@
       Print("]");
     } else {
       // Print only if jumping to entry point.
-      const Code& code = Code::Handle(
-          StackFrame::LookupCode(Isolate::Current(), addr));
+      const Code& code = Code::Handle(Code::LookupCode(addr));
       if (!code.IsNull() && (code.EntryPoint() == addr)) {
         const Function& function = Function::Handle(code.function());
         const char* name_of_function = function.ToFullyQualifiedCString();