An element's cdata is not always collected. Conditionally convert the cdata into an svn_string_t.
An element's cdata is not always collected. Conditionally convert the
cdata into an svn_string_t.

* subversion/libsvn_ra_serf/xml.c:
  (svn_ra_serf__xml_cb_end): cdata may be NULL.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion