* libsvn_ra_dav/fetch.c:
* libsvn_ra_dav/fetch.c:

    (CHKERR): Redo  macro to use do{}while(0) instead of if(){}else
      construct. The latter was ugly.

    Update all users of the macro. Gets rid of the svn_error_t *err in
    each function, and the goto.

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