Fix windows-specific usage of CFX_WideStr::operator LPCWSTR().

core/src/fxcrt/fx_basic_util.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/fxcrt/fx_basic.h"
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
 #include <sys/types.h>
 #include <dirent.h>
@@ skipping 326 matching lines @@
 #else
     DIR* dir = opendir(path);
     return dir;
 #endif
 }
 void* FX_OpenFolder(FX_LPCWSTR path)
 {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
     CFindFileDataW* pData = new CFindFileDataW;
 #ifdef _FX_WINAPI_PARTITION_DESKTOP_
-    pData->m_Handle = FindFirstFileW(CFX_WideString(path) + L"/*.*", &pData->m_FindData);
+    pData->m_Handle = FindFirstFileW((CFX_WideString(path) + L"/*.*").c_str(), &pData->m_FindData);
 #else
-    pData->m_Handle = FindFirstFileExW(CFX_WideString(path) + L"/*.*", FindExInfoStandard, &pData->m_FindData, FindExSearchNameMatch, NULL, 0);
+    pData->m_Handle = FindFirstFileExW((CFX_WideString(path) + L"/*.*").c_str(), FindExInfoStandard, &pData->m_FindData, FindExSearchNameMatch, NULL, 0);
 #endif
     if (pData->m_Handle == INVALID_HANDLE_VALUE) {
         delete pData;
         return NULL;
     }
     pData->m_bEnd = FALSE;
     return pData;
 #else
     DIR* dir = opendir(CFX_ByteString::FromUnicode(path));
     return dir;
@@ skipping 127 matching lines @@
 }
 
 CFX_Vector_3by1 CFX_Matrix_3by3::TransformVector(const CFX_Vector_3by1 &v)
 {
     return CFX_Vector_3by1(
         a * v.a + b * v.b + c * v.c,
         d * v.a + e * v.b + f * v.c,
         g * v.a + h * v.b + i * v.c
     );
 }