Fix errors on Travis CI

[kana]

https://travis-ci.org/kana/vim-operator-replace/builds/52000461

t/basics.vim ..... 1/? 
ok 2 - # SKIP <Plug>(operator-replace) with char {motion} works fine with block {register} content - 'FIXME: NIY - but what result I expect for this case?'
not ok 3 - <Plug>(operator-replace) with char {motion} works fine with char {register} content (1)
# Expected getline('.') ==# 'qux bar baz'
#       Actual value: " bar baz"
#     Expected value: "qux bar baz"