Return unique_ptr from CXFA_FFApp::CreateDoc.

fpdfsdk/fpdfview.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 "public/fpdfview.h"
 
 #include <memory>
 #include <utility>
@@ skipping 872 matching lines @@
   page2device.Transform(((FX_FLOAT)page_x), ((FX_FLOAT)page_y), device_x_f,
                         device_y_f);
   *device_x = FXSYS_round(device_x_f);
   *device_y = FXSYS_round(device_y_f);
 #endif  // PDF_ENABLE_XFA
 }
 
 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width,
                                                 int height,
                                                 int alpha) {
-  std::unique_ptr<CFX_DIBitmap> pBitmap(new CFX_DIBitmap);
-  if (!pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32)) {
+  auto pBitmap = pdfium::MakeUnique<CFX_DIBitmap>();
+  if (!pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32))
     return nullptr;
-  }
+
   return pBitmap.release();
 }
 
 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_CreateEx(int width,
                                                   int height,
                                                   int format,
                                                   void* first_scan,
                                                   int stride) {
   FXDIB_Format fx_format;
   switch (format) {
@@ skipping 315 matching lines @@
   if (!buffer) {
     *buflen = len;
   } else if (len <= *buflen) {
     memcpy(buffer, utf16Name.c_str(), len);
     *buflen = len;
   } else {
     *buflen = -1;
   }
   return (FPDF_DEST)pDestObj;
 }