Follow-up to r36360: Fix segmentation fault which occurs when unrecognized file was specified in argument of the --config-option option.
Follow-up to r36360:
Fix segmentation fault which occurs when unrecognized file was specified in
argument of the --config-option option.

* subversion/libsvn_subr/cmdline.c
  (svn_cmdline__apply_config_options): Don't call svn_config_set() with cfg=NULL.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@877554 13f79535-47bb-0310-9956-ffa450edef68

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