Do hit tests against Annots in reverse order.

core/src/fpdfdoc/doc_link.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../include/fpdfdoc/fpdf_doc.h"
 #include "../../src/fxcrt/fx_safe_types.h"
 
 CPDF_LinkList::~CPDF_LinkList()
@@ skipping 38 matching lines @@
     }
     return (CPDF_Dictionary*)pPageLinkList->GetAt(index);
 }
 CPDF_Link CPDF_LinkList::GetLinkAtPoint(CPDF_Page* pPage, FX_FLOAT pdf_x, FX_FLOAT pdf_y)
 {
     CFX_PtrArray* pPageLinkList = GetPageLinks(pPage);
     if (pPageLinkList == NULL) {
         return NULL;
     }
     int size = pPageLinkList->GetSize();
-    for (int i = 0; i < size; i ++) {
+    for (int i = size - 1; i >= 0; --i) {
         CPDF_Link Link = (CPDF_Dictionary*)pPageLinkList->GetAt(i);
         CPDF_Rect rect = Link.GetRect();
         if (rect.Contains(pdf_x, pdf_y)) {
             return Link;
         }
     }
     return NULL;
 }
 void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage, CFX_PtrArray* pList)
 {
@@ skipping 28 matching lines @@
         return name_tree.LookupNamedDest(pDoc, name);
     } else if (pDest->GetType() == PDFOBJ_ARRAY) {
         return (CPDF_Array*)pDest;
     }
     return NULL;
 }
 CPDF_Action CPDF_Link::GetAction()
 {
     return m_pDict->GetDict("A");
 }