Fix yield inside with

src/scopes.cc

Index: src/scopes.cc
diff --git a/src/scopes.cc b/src/scopes.cc
index 10548f99381e933d3dc9ccd3063e25fdea38c378..e88c9e5cba35fbbc9b09b8dc7d2994ccf83a8d27 100644
--- a/src/scopes.cc
+++ b/src/scopes.cc
@@ -726,7 +726,7 @@ int Scope::ContextChainLength(Scope* scope) {
   int n = 0;
   for (Scope* s = this; s != scope; s = s->outer_scope_) {
     ASSERT(s != NULL);  // scope must be in the scope chain
-    if (s->num_heap_slots() > 0) n++;
+    if (s->is_with_scope() || s->num_heap_slots() > 0) n++;

[Michael Starzinger, 2013/04/26 11:31:10]

As discussed offline: It is confusing that we don't check for catch-scopes here,
as they are also part of the scope chain. It seems catch-scopes are implicitly
accounted for because they always have heap-slots. So I think we should add an
assert in that regard here.

ASSERT(!s->is_catch_scope() || s->num_heap_slots() > 0);

   }
   return n;
 }