Fix mistake in FastNewFunctionContextStub

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index e38cf02a3615ba591dc947a09cd6322e817aedad..f458e5e465a8c8c0ed83429f797a201ee004984a 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -4797,14 +4797,14 @@ compiler::Node* FastNewFunctionContextStub::Generate(
   assembler->Bind(&loop);
   {
     Node* slot_index = var_slot_index.value();
-    // check for < length later, there are at least Context::MIN_CONTEXT_SLOTS
+    assembler->GotoUnless(assembler->Int32LessThan(slot_index, length),
+                          &after_loop);
     assembler->StoreFixedArrayElement(function_context, slot_index, undefined,
                                       SKIP_WRITE_BARRIER);
     Node* one = assembler->Int32Constant(1);
     Node* next_index = assembler->Int32Add(slot_index, one);
     var_slot_index.Bind(next_index);
-    assembler->Branch(assembler->Int32LessThan(next_index, length), &loop,
-                      &after_loop);
+    assembler->Goto(&loop);
   }
   assembler->Bind(&after_loop);