tty vt: Fix a regression in command line edition
The commit
81732c3b2fede049a692e58a7ceabb6d18ffb18c
("Fix line garbage in virtual console on command line edition")
made a regression with some machines: some characters were not erased
after line edition.
This patch adjusts the number of moved characters and the size of the
region to be updated.
Signed-off-by: Jean-François Moine <[email protected]>
Tested-by: Krzysztof Mazur <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>