Fix typo from commit r447946588d6b.

core/src/fpdfdoc/doc_form.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 "core/include/fpdfdoc/fpdf_doc.h"
 #include "doc_utils.h"
 
 const int nMaxRecursion = 32;
@@ skipping 499 matching lines @@
 CPDF_Font* CPDF_InterForm::AddNativeFont(uint8_t charSet,
                                          CPDF_Document* pDocument) {
   if (!pDocument)
     return nullptr;
 
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
   LOGFONTA lf;
   CFX_ByteString csFontName = GetNativeFont(charSet, &lf);
   if (!csFontName.IsEmpty()) {
     if (csFontName == "Helvetica")
-      return pFont = AddStandardFont(pDocument, csFontName);
+      return AddStandardFont(pDocument, csFontName);
     return pDocument->AddWindowsFont(&lf, FALSE, TRUE);
   }
 #endif
   return nullptr;
 }
 
 CPDF_Font* CPDF_InterForm::AddNativeFont(CPDF_Document* pDocument) {
   return pDocument ? AddNativeFont(GetNativeCharSet(), pDocument) : nullptr;
 }
 
@@ skipping 739 matching lines @@
     FDF_ImportField(pField, L"", bNotify);
   }
   if (bNotify && m_pFormNotify != NULL) {
     m_pFormNotify->AfterFormImportData(this);
   }
   return TRUE;
 }
 void CPDF_InterForm::SetFormNotify(const CPDF_FormNotify* pNotify) {
   m_pFormNotify = (CPDF_FormNotify*)pNotify;
 }