Fix an unitialized memory read identified by valgrind.
Fix an unitialized memory read identified by valgrind.

* subversion/libsvn_wc/questions.c (svn_wc_check_wc): Check error before format

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