message: Fix a typo in streamio.h
diff: @@ -155,7 +155,7 @@ public:
  {
  // This preserves everything from min(m_BufferBase, m_BufferHead - 64) -> end of buffer
  // which will still be in place relative to m_BufferHead.
  - // In other words - reservation will keep the aleady-read data that's after the head pointer,
  + // In other words - reservation will keep the already-read data that's after the head pointer,
  // as well as up to 64 bytes *behind* the head if it exists.
  if(numBytes > Available())
  {
  