Use std::set to track visited dictionaries in fsdk_actionhandler.

fpdfsdk/include/fsdk_actionhandler.h

Index: fpdfsdk/include/fsdk_actionhandler.h
diff --git a/fpdfsdk/include/fsdk_actionhandler.h b/fpdfsdk/include/fsdk_actionhandler.h
index 33f127d8c9a33596cf851b512c361878ea977582..b5672d178d4dbc7360c0b0f31c76cbb8276ad938 100644
--- a/fpdfsdk/include/fsdk_actionhandler.h
+++ b/fpdfsdk/include/fsdk_actionhandler.h
@@ -8,12 +8,12 @@
 #define FPDFSDK_INCLUDE_FSDK_ACTIONHANDLER_H_
 
 #include <memory>
+#include <set>
 
 #include "core/include/fpdfdoc/fpdf_doc.h"
 #include "core/include/fxcrt/fx_string.h"
 #include "fsdk_baseform.h"
 
-class CFX_PtrList;
 class CPDFSDK_Annot;
 class CPDFSDK_Document;
 class CPDF_Bookmark;
@@ -68,29 +68,29 @@ class CPDFSDK_ActionHandler {
  private:
   FX_BOOL ExecuteDocumentOpenAction(const CPDF_Action& action,
                                     CPDFSDK_Document* pDocument,
-                                    CFX_PtrList& list);
+                                    std::set<CPDF_Dictionary*>* visited);
   FX_BOOL ExecuteDocumentPageAction(const CPDF_Action& action,
                                     CPDF_AAction::AActionType type,
                                     CPDFSDK_Document* pDocument,
-                                    CFX_PtrList& list);
+                                    std::set<CPDF_Dictionary*>* visited);
   FX_BOOL ExecuteFieldAction(const CPDF_Action& action,
                              CPDF_AAction::AActionType type,
                              CPDFSDK_Document* pDocument,
                              CPDF_FormField* pFormField,
                              PDFSDK_FieldAction& data,
-                             CFX_PtrList& list);
+                             std::set<CPDF_Dictionary*>* visited);
   FX_BOOL ExecuteScreenAction(const CPDF_Action& action,
                               CPDF_AAction::AActionType type,
                               CPDFSDK_Document* pDocument,
                               CPDFSDK_Annot* pScreen,
-                              CFX_PtrList& list);
+                              std::set<CPDF_Dictionary*>* visited);
   FX_BOOL ExecuteBookMark(const CPDF_Action& action,
                           CPDFSDK_Document* pDocument,
                           CPDF_Bookmark* pBookmark,
-                          CFX_PtrList& list);
+                          std::set<CPDF_Dictionary*>* visited);
   FX_BOOL ExecuteLinkAction(const CPDF_Action& action,
                             CPDFSDK_Document* pDocument,
-                            CFX_PtrList& list);
+                            std::set<CPDF_Dictionary*>* visited);
 
   void DoAction_NoJs(const CPDF_Action& action, CPDFSDK_Document* pDocument);
   void RunDocumentPageJavaScript(CPDFSDK_Document* pDocument,