Get rid of FX_LPCSTR cast.

fpdfsdk/src/fsdk_baseform.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/fsdk_define.h"
 #include "../include/fsdk_mgr.h"
 #include "../include/fsdk_baseannot.h"
 #include "../include/fsdk_baseform.h"
@@ skipping 1898 matching lines @@
                         pStreamDict->SetAt("BBox", pBBox);
                         pBBox->AddInteger(0);
                         pBBox->AddInteger(0);
                         pBBox->AddInteger(nWidth);
                         pBBox->AddInteger(nHeight);
                         pStreamDict->SetAtInteger("FormType", 1);
 
                         pRetStream = new CPDF_Stream(NULL, 0, NULL);
                         CFX_ByteString csStream;
                         csStream.Format("q\n%d 0 0 %d 0 0 cm\n/Img Do\nQ", nWidth, nHeight);
-                        pRetStream->InitStream((FX_BYTE*)(FX_LPCSTR)csStream, csStream.GetLength(), pStreamDict);
+                        pRetStream->InitStream((FX_BYTE*)csStream.c_str(), csStream.GetLength(), pStreamDict);
                         pDocument->AddIndirectObject(pRetStream);
                 }
 
                 delete pBmp;
         }
 
         return pRetStream;
 }
 #endif
 
@@ skipping 1166 matching lines @@
 
         CPDF_Annot* pPDFAnnot = pAnnot->GetPDFAnnot();
         ASSERT(pPDFAnnot != NULL);
 
         CPDF_Rect rcAnnot;
         pPDFAnnot->GetRect(rcAnnot);
 
         return rcAnnot;
 }