Fix validation of a WC entry's working size field.
Fix validation of a WC entry's working size field.

* subversion/libsvn_wc/entries.c
  (read_entry): If a WC entry has no working_size field in the entries
   file, use its default (set when the entry is created) instead of
   erroring out.

Patch by: ehu
(Tweaked by me.)

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