Fix style-formatter issues

With code change of [Add checkpoint while reboot complete], Linter shows
several additional format issues. To restrain commit purpose, separate
the format issues to this commit.

Tested: https://paste.googleplex.com/5035100150169600?raw

Change-Id: Ic9563ef0fb7ed9a9c218e665bfbcdb7f7f9c05f1
Google-Bug-Id: 369744413
Signed-off-by: Jack Huang <huangweichieh@google.com>