Continue fixing FX_BOOL / int noise

fpdfsdk/cpdfsdk_formfillenvironment.cpp

 // Copyright 2016 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 "fpdfsdk/cpdfsdk_formfillenvironment.h"
 
 #include <memory>
 
@@ skipping 748 matching lines @@
       if (!m_pFocusAnnot)
         return TRUE;
     } else {
       m_pFocusAnnot.Reset(pFocusAnnot.Get());
     }
   }
   return FALSE;
 }
 
 FX_BOOL CPDFSDK_FormFillEnvironment::GetPermissions(int nFlag) {
-  return GetPDFDocument()->GetUserPermissions() & nFlag;
+  return !!(GetPDFDocument()->GetUserPermissions() & nFlag);
 }