Heh, ra_dav did a PROPFIND on /A/B, which failed, then on /A, which failed, then on /, which failed.  But then it got stuck in an infinite loop, because svn_path_remove_component("/") == "/".
Heh, ra_dav did a PROPFIND on /A/B, which failed, then on /A, which
failed, then on /, which failed.  But then it got stuck in an infinite
loop, because svn_path_remove_component("/") == "/".

* props.c (svn_ra_dav__get_baseline_info):  prevent infinite loops.

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