Fix 'the right-of-cursor background color is inverted when we do delete-after-cursor' bug on luna88k wscons console, by adding the same operation in om_putchar() to om_erasecols() and om_eraserows().
Fix 'the right-of-cursor background color is inverted when we do
delete-after-cursor' bug on luna88k wscons console, by adding the same
operation in om_putchar() to om_erasecols() and om_eraserows().

ok miod@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars