Pass CFX_*StringCs to FX_HashCode_GETA and _GETW hash functions.

xfa/fgas/crt/fgas_codepage.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/fxcrt/include/fx_ext.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
 #include "xfa/fgas/crt/fgas_language.h"
 
@@ skipping 291 matching lines @@
     {0xf637e157, 0x478},  {0xfc213f3a, 0x2717}, {0xff654d14, 0x3b5},
 };
 uint16_t FX_GetCodePageFromStringA(const FX_CHAR* pStr, int32_t iLength) {
   FXSYS_assert(pStr != NULL);
   if (iLength < 0) {
     iLength = FXSYS_strlen(pStr);
   }
   if (iLength == 0) {
     return 0xFFFF;
   }
-  uint32_t uHash = FX_HashCode_String_GetA(pStr, iLength, TRUE);
-  int32_t iStart = 0, iMid;
+  uint32_t uHash = FX_HashCode_GetA(CFX_ByteStringC(pStr, iLength), true);
+  int32_t iStart = 0;
   int32_t iEnd = sizeof(g_FXCPHashTable) / sizeof(FX_STR2CPHASH) - 1;
   FXSYS_assert(iEnd >= 0);
   do {
-    iMid = (iStart + iEnd) / 2;
+    int32_t iMid = (iStart + iEnd) / 2;
     const FX_STR2CPHASH& cp = g_FXCPHashTable[iMid];
     if (uHash == cp.uHash) {
       return (uint16_t)cp.uCodePage;
     } else if (uHash < cp.uHash) {
       iEnd = iMid - 1;
     } else {
       iStart = iMid + 1;
     }
   } while (iStart <= iEnd);
   return 0xFFFF;
 }
 uint16_t FX_GetCodePageFormStringW(const FX_WCHAR* pStr, int32_t iLength) {
   if (iLength < 0) {
     iLength = FXSYS_wcslen(pStr);
   }
   if (iLength == 0) {
     return 0xFFFF;
   }
   CFX_ByteString csStr;
   FX_CHAR* pBuf = csStr.GetBuffer(iLength + 1);
   for (int32_t i = 0; i < iLength; ++i) {
     *pBuf++ = (FX_CHAR)*pStr++;
   }
   csStr.ReleaseBuffer(iLength);
   return FX_GetCodePageFromStringA(csStr.c_str(), iLength);
 }