tty: n_tty: deduplicate copy code in n_tty_receive_buf_real_raw()
The code is duplicated to perform the copy twice -- to handle buffer wrap-around. Instead of the duplication, roll this into the loop. (And add some blank lines around to have the code a bit more readable.) Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20230827074147.2287-15-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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