Remove some unnecessary code duplication.
Remove some unnecessary code duplication.

* subversion/svn/list-cmd.c
  (svn_cl__list): Remove the error composition from the if/else block both
    paths use it.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1415212 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion