tty: n_gsm: cleanup gsm_control_command and gsm_control_reply
There are multiple places in gsm_control_command and gsm_control_reply that derive the specific DLCI handle directly out of the DLCI table in gsm. Add a local variable which holds this handle and use it instead to improve code readability. Signed-off-by: Daniel Starke <daniel.starke@siemens.com> Link: https://lore.kernel.org/r/20230817093231.2317-7-daniel.starke@siemens.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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