BUG/MINOR: peers: the buffer size is global.tune.bufsize, not trash.size

Currently this is harmless since trash.size is copied from
global.tune.bufsize, but this may soon change when buffers become
more dynamic.

At least for consistency it should be backported to 1.5.
(cherry picked from commit 42fb809cf455aac59dbe35ebd59262fb52e58bb5)
1 file changed