Fix a few compiler warnings.
Fix a few compiler warnings.

* subversion/libsvn_delta/depth_filter_editor.c
  (okay_to_edit): Include the rest of the depth enum in a switch statement,
    and move the abort() call to the default case.  Also, for cases which we
    should never hit, make them abort(), too.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@874345 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion