Tier0: fix bug in CIOStream::Pad()

We must always use the remainder when writing out padding. The bug was that it would still do the full count or PAD_BUF_SIZE at all times even though the remainder is 20 for example. This fixes the last few rare alignment problems.

src/tier0/binstream.cpp

@@ -293,7 +293,7 @@ void CIOStream::Pad(const size_t count)
 
 	while (remainder)
 	{
-		const size_t writeCount = (std::min)(count, PAD_BUF_SIZE);
+		const size_t writeCount = (std::min)(remainder, PAD_BUF_SIZE);
 		Write(s_padBuf, writeCount);
 
 		remainder -= writeCount;