The M117 command parser discards the last character of the message
whenever the M117 command does not begin the line and there is no *xx
checksum, e.g.
N0 M117 Look at me
causes the banner area of the printer screen to display "Look at m".
This patch only trims the checksum when one is found to trim.
Signed-Off-By: Jonathan Pickard <jhp@adjustablelabs.info>
Pedro Lamas
jhpadjustable
Kevin O'Connor