Fix svn-push, which was segfaulting all the time, due to violating API not-NULL requirements.
Fix svn-push, which was segfaulting all the time, due to violating API
not-NULL requirements.

* contrib/client-side/svn-push/svn-push.c (do_job): Pass "" not NULL.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@854806 13f79535-47bb-0310-9956-ffa450edef68

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