read_csv last whitespace line not ignored when skip_blank_lines=True

[kawochen]

data = "1,2,3\n4,5,6\n "
print(pandas.read_csv(pandas.compat.StringIO(data), skip_blank_lines=True))
    1   2   3
0   4   5   6
1 NaN NaN NaN

[jreback]

these are related / maybe dupe

#10548, #10164

[jreback]

closed by #10825