api accessor store ics should return passed value

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 282a6d87562981a3368c8a8c3e7a26e044afc443..10818ce7026e3cb3fe19371cb10290d249932f5d 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -5448,7 +5448,7 @@ void CallApiFunctionStub::Generate(MacroAssembler* masm) {
   Register context = cp;
 
   int argc = ArgumentBits::decode(bit_field_);
-  bool restore_context = RestoreContextBits::decode(bit_field_);
+  bool is_store = IsStoreBits::decode(bit_field_);
   bool call_data_undefined = CallDataUndefinedBits::decode(bit_field_);
 
   typedef FunctionCallbackArguments FCA;
@@ -5526,15 +5526,16 @@ void CallApiFunctionStub::Generate(MacroAssembler* masm) {
   AllowExternalCallThatCantCauseGC scope(masm);
   MemOperand context_restore_operand(
       fp, (2 + FCA::kContextSaveIndex) * kPointerSize);
-  MemOperand return_value_operand(fp,
-                                  (2 + FCA::kReturnValueOffset) * kPointerSize);
+  // Stores return the first js argument
+  int return_value_offset =
+      2 + (is_store ? FCA::kArgsLength : FCA::kReturnValueOffset);
+  MemOperand return_value_operand(fp, return_value_offset * kPointerSize);
 
   __ CallApiFunctionAndReturn(api_function_address,
                               thunk_ref,
                               kStackUnwindSpace,
                               return_value_operand,
-                              restore_context ?
-                                  &context_restore_operand : NULL);
+                              &context_restore_operand);
 }