Fix a stack height mismatch when deoptimizing.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 2de70ffa5794bbdd331e1d35baae598302b53aaa..c4eae9a216650ed41f7bab76b88ef74e516dd3dd 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -3830,9 +3830,11 @@ bool HGraphBuilder::TryArgumentsAccess(Property* expr) {
     HInstruction* elements = AddInstruction(new HArgumentsElements);
     result = new HArgumentsLength(elements);
   } else {
+    Push(graph()->GetArgumentsObject());
     VisitForValue(expr->key());
     if (HasStackOverflow()) return false;
     HValue* key = Pop();
+    Drop(1);  // Arguments object.
     HInstruction* elements = AddInstruction(new HArgumentsElements);
     HInstruction* length = AddInstruction(new HArgumentsLength(elements));
     AddInstruction(new HBoundsCheck(key, length));