Merge to master: Take Jun's UTF16LE patches.

(cherry picked from commit 8d89e65897d8b6cf7899e7a82d9d381c3ad327cb)
(cherry picked from commit c70b19aad245fb1ed39bf8c264d991555f4c5a58)

BUG=pdfium:275
TBR=jun_fang@foxitsoftware.com

Review URL: https://codereview.chromium.org/1473753004 .

2 files changed, 12 insertions, 14 deletions

diff --git a/core/src/fxcrt/fx_basic_wstring.cpp b/core/src/fxcrt/fx_basic_wstring.cpp
index 220ffbd57d..7ea7e8e112 100644
--- a/core/src/fxcrt/fx_basic_wstring.cpp
+++ b/core/src/fxcrt/fx_basic_wstring.cpp
@@ -287,19 +287,17 @@ CFX_ByteString CFX_WideString::UTF8Encode() const {
   return FX_UTF8Encode(*this);
 }
 CFX_ByteString CFX_WideString::UTF16LE_Encode() const {
-  if (m_pData == NULL) {
-    return CFX_ByteString(FX_BSTRC("\0\0"));
+  CFX_ByteString result;
+  if (!m_pData) {
+    return result;
   }
   int len = m_pData->m_nDataLength;
-  CFX_ByteString result;
-  FX_CHAR* buffer = result.GetBuffer(len * 2 + 2);
-  for (int i = 0; i < len; i++) {
+  FX_CHAR* buffer = result.GetBuffer(len * 2);
+  for (int i = 0; i < len; ++i) {
     buffer[i * 2] = m_pData->m_String[i] & 0xff;
     buffer[i * 2 + 1] = m_pData->m_String[i] >> 8;
   }
-  buffer[len * 2] = 0;
-  buffer[len * 2 + 1] = 0;
-  result.ReleaseBuffer(len * 2 + 2);
+  result.ReleaseBuffer(len * 2);
   return result;
 }
 void CFX_WideString::ConvertFrom(const CFX_ByteString& str,
diff --git a/core/src/fxcrt/fx_basic_wstring_unittest.cpp b/core/src/fxcrt/fx_basic_wstring_unittest.cpp
index 74410ddda3..22f42d7985 100644
--- a/core/src/fxcrt/fx_basic_wstring_unittest.cpp
+++ b/core/src/fxcrt/fx_basic_wstring_unittest.cpp
@@ -283,12 +283,12 @@ TEST(fxcrt, WideStringUTF16LE_Encode) {
     CFX_WideString ws;
     CFX_ByteString bs;
   } utf16le_encode_cases[] = {
-      {L"", ByteStringLiteral("\0\0")},
-      {L"abc", ByteStringLiteral("a\0b\0c\0\0\0")},
-      {L"abcdef", ByteStringLiteral("a\0b\0c\0d\0e\0f\0\0\0")},
-      {L"abc\0def", ByteStringLiteral("a\0b\0c\0\0\0")},
-      {L"\xaabb\xccdd", ByteStringLiteral("\xbb\xaa\xdd\xcc\0\0")},
-      {L"\x3132\x6162", ByteStringLiteral("\x32\x31\x62\x61\0\0")},
+      {L"", ByteStringLiteral("")},
+      {L"abc", ByteStringLiteral("a\0b\0c\0")},
+      {L"abcdef", ByteStringLiteral("a\0b\0c\0d\0e\0f\0")},
+      {L"abc\0def", ByteStringLiteral("a\0b\0c\0")},
+      {L"\xaabb\xccdd", ByteStringLiteral("\xbb\xaa\xdd\xcc")},
+      {L"\x3132\x6162", ByteStringLiteral("\x32\x31\x62\x61")},
   };
 
   for (size_t i = 0; i < FX_ArraySize(utf16le_encode_cases); ++i) {