[generators] Always call function with closure context when resuming.

src/builtins/x64/builtins-x64.cc

Index: src/builtins/x64/builtins-x64.cc
diff --git a/src/builtins/x64/builtins-x64.cc b/src/builtins/x64/builtins-x64.cc
index 127d13efb6488ebc98f3604d27e69a6670ba64cc..1a6a6759e1a4bdc38ef9174f9bffa4f32d09683e 100644
--- a/src/builtins/x64/builtins-x64.cc
+++ b/src/builtins/x64/builtins-x64.cc
@@ -458,8 +458,8 @@ void Builtins::Generate_ResumeGeneratorTrampoline(MacroAssembler* masm) {
   __ movp(FieldOperand(rbx, JSGeneratorObject::kResumeModeOffset), rdx);
 
   // Load suspended function and context.
-  __ movp(rsi, FieldOperand(rbx, JSGeneratorObject::kContextOffset));
   __ movp(rdi, FieldOperand(rbx, JSGeneratorObject::kFunctionOffset));
+  __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
 
   // Flood function if we are stepping.
   Label prepare_step_in_if_stepping, prepare_step_in_suspended_generator;