Reapply change to with/arguments interaction.

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 bf7ac5fb827709e620a38f3ca4c02e274bdc14fc..a44600727579043f89852f211f7d61ef3838c3e2 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -112,10 +112,9 @@ void FastNewClosureStub::Generate(MacroAssembler* masm) {
 void FastNewContextStub::Generate(MacroAssembler* masm) {
   // Try to allocate the context in new space.
   Label gc;
-  int length = slots_ + Context::MIN_CONTEXT_SLOTS;
 
   // Attempt to allocate the context in new space.
-  __ AllocateInNewSpace(FixedArray::SizeFor(length),
+  __ AllocateInNewSpace(FixedArray::SizeFor(slots_),
                         r0,
                         r1,
                         r2,
@@ -128,7 +127,7 @@ void FastNewContextStub::Generate(MacroAssembler* masm) {
   // Setup the object header.
   __ LoadRoot(r2, Heap::kContextMapRootIndex);
   __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
-  __ mov(r2, Operand(Smi::FromInt(length)));
+  __ mov(r2, Operand(Smi::FromInt(slots_)));
   __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset));
 
   // Setup the fixed slots.
@@ -144,7 +143,7 @@ void FastNewContextStub::Generate(MacroAssembler* masm) {
 
   // Initialize the rest of the slots to undefined.
   __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
-  for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) {
+  for (int i = Context::MIN_CONTEXT_SLOTS; i < slots_; i++) {
     __ str(r1, MemOperand(r0, Context::SlotOffset(i)));
   }