revert previously added extra calls to move_mbright(); it's more

revert previously added extra calls to move_mbright(); it's more
efficient to just add the return value of parse_char() directly instead
of having move_mbright() return it (except in the cursor movement
functions, which should be kept simple)

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2271 35c25a1d-7b9e-4130-9fde-d3aeb78583b8