The code above it already sets endbuf to the beginning of the last data
added. On a new reply, endbuf is decremented to make space for the new
data. There's no reason to adjust it again for the old data after it has
already been set.
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>