Fix a spelling in the comment line.

s/memry/memory/p

This is on linux-next.
Signed-off-by: NBhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: NWilly Tarreau <w@1wt.eu>
Signed-off-by: NPaul E. McKenney <paulmck@kernel.org>