misc optimizations

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@68 57ff6487-cd31-0410-9ec3-f628ee90f5f0

1 files changed, 2 insertions, 1 deletions

diff --git a/queue.cpp b/queue.cpp
index 8ef1141..b5ac16d 100644
--- a/queue.cpp
+++ b/queue.cpp
@@ -344,8 +344,9 @@ void ByteQueue::Unget(byte inByte)
 void ByteQueue::Unget(const byte *inString, unsigned int length)
 {
 	unsigned int len = STDMIN(length, m_head->m_head);
-	memcpy(m_head->buf + m_head->m_head - len, inString + length - len, len);
 	length -= len;
+	m_head->m_head -= len;
+	memcpy(m_head->buf + m_head->m_head, inString + length, len);
 
 	if (length > 0)
 	{