[x265] fix 4:2:2 coeff rate calc

[Satoshi Nakagawa]

# HG changeset patch
# User Satoshi Nakagawa <nakagawa424 at oki.com>
# Date 1399797157 -32400
#      Sun May 11 17:32:37 2014 +0900
# Node ID d3dab48acd64e974e44940cb3f29e48365b7bfb9
# Parent  d0acf82a77f9ce2aaa08255f69dba0bceb9f4598
fix 4:2:2 coeff rate calc

diff -r d0acf82a77f9 -r d3dab48acd64 source/Lib/TLibEncoder/TEncSearch.cpp
--- a/source/Lib/TLibEncoder/TEncSearch.cpp	Thu May 08 18:52:17 2014 +0900
+++ b/source/Lib/TLibEncoder/TEncSearch.cpp	Sun May 11 17:32:37 2014 +0900
@@ -3148,11 +3148,11 @@
                 cu->setCbfPartRange(absSum[TEXT_CHROMA_V][tuIterator.m_section] ? setCbf : 0, TEXT_CHROMA_V, tuIterator.m_absPartIdxTURelCU, tuIterator.m_absPartIdxStep);
 
                 m_entropyCoder->encodeQtCbf(cu, tuIterator.m_absPartIdxTURelCU, tuIterator.m_absPartIdxStep, widthC, heightC, TEXT_CHROMA_U, trMode, true);
-                m_entropyCoder->encodeCoeffNxN(cu, coeffCurU, tuIterator.m_absPartIdxTURelCU, widthC, heightC, depth, TEXT_CHROMA_U);
+                m_entropyCoder->encodeCoeffNxN(cu, coeffCurU + subTUBufferOffset, tuIterator.m_absPartIdxTURelCU, widthC, heightC, depth, TEXT_CHROMA_U);
                 singleBitsComp[TEXT_CHROMA_U][tuIterator.m_section] = m_entropyCoder->getNumberOfWrittenBits() - singleBitsPrev;
 
                 m_entropyCoder->encodeQtCbf(cu, tuIterator.m_absPartIdxTURelCU, tuIterator.m_absPartIdxStep, widthC, heightC, TEXT_CHROMA_V, trMode, true);
-                m_entropyCoder->encodeCoeffNxN(cu, coeffCurV, tuIterator.m_absPartIdxTURelCU, widthC, heightC, depth, TEXT_CHROMA_V);
+                m_entropyCoder->encodeCoeffNxN(cu, coeffCurV + subTUBufferOffset, tuIterator.m_absPartIdxTURelCU, widthC, heightC, depth, TEXT_CHROMA_V);
                 uint32_t newBits = m_entropyCoder->getNumberOfWrittenBits();
                 singleBitsComp[TEXT_CHROMA_V][tuIterator.m_section] = newBits - (singleBitsPrev + singleBitsComp[TEXT_CHROMA_U][tuIterator.m_section]);