Simplify CodePatcher::GetStaticCallAt.

runtime/vm/object.cc

Index: runtime/vm/object.cc
===================================================================
--- runtime/vm/object.cc	(revision 15100)
+++ runtime/vm/object.cc	(working copy)
@@ -7314,12 +7314,11 @@
   deopt_ids->Clear();
   const PcDescriptors& descriptors =
       PcDescriptors::Handle(this->pc_descriptors());
-  Function& function = Function::Handle();
   for (intptr_t i = 0; i < descriptors.Length(); i++) {
     if (descriptors.DescriptorKind(i) == PcDescriptors::kFuncCall) {
       // Static call.
-      uword target_addr;
-      CodePatcher::GetStaticCallAt(descriptors.PC(i), &function, &target_addr);
+      const uword target_addr =
+          CodePatcher::GetStaticCallTargetAt(descriptors.PC(i));
       if (target_addr == StubCode::CallStaticFunctionEntryPoint()) {
         deopt_ids->Add(descriptors.DeoptId(i));
       }