Fix a bug in with and catch context allocation.

src/scopes.h

Index: src/scopes.h
diff --git a/src/scopes.h b/src/scopes.h
index a7623a39a734db650699b5e1560f51e43a227cb7..a493d57520a7d44998efa6d27a06c3b783a041a6 100644
--- a/src/scopes.h
+++ b/src/scopes.h
@@ -290,6 +290,10 @@ class Scope: public ZoneObject {
   // The number of contexts between this and scope; zero if this == scope.
   int ContextChainLength(Scope* scope);
 
+  // Find the first function, global, or eval scope.  This is the scope
+  // where var declarations will be hoisted to in the implementation.
+  Scope* DeclarationScope();
+
   // ---------------------------------------------------------------------------
   // Strict mode support.
   bool IsDeclared(Handle<String> name) {