Fix debugger crashes

runtime/vm/scopes.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/scopes.h"
 
 #include "vm/ast.h"
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 188 matching lines @@
   }
   return var_desc.raw();
 }
 
 
 // Add variables that are declared in this scope to vars, then collect
 // variables of children, followed by siblings.
 void LocalScope::CollectLocalVariables(GrowableArray<LocalVariable*>* vars) {
   for (int i = 0; i < this->variables_.length(); i++) {
     LocalVariable* var = variables_[i];
-    if ((var->owner() == this) && Scanner::IsIdent(var->name())) {
+    // TODO(hausner): Remove the is_captured() condition once the debugger
+    // can handle getting values of captured variables.
+    if (!var->is_captured() && (var->owner() == this) &&
+        Scanner::IsIdent(var->name())) {
       vars->Add(this->variables_[i]);
     }
   }
   if (child() != NULL) {
     child()->CollectLocalVariables(vars);
   }
   if (sibling() != NULL) {
     sibling()->CollectLocalVariables(vars);
   }
 }
@@ skipping 248 matching lines @@
       }
       if (owner()->context_level() == other.owner()->context_level()) {
         return true;
       }
     }
   }
   return false;
 }
 
 }  // namespace dart