Correction for r7886: Prevent undefined behaviour as  pointed out by Philip Martin.
Correction for r7886: Prevent undefined behaviour as 
pointed out by Philip Martin.

* subversion/libsvn_subr/io.c (do_io_file_wrapper_cleanup): 
  Change expression order to prevent undefined behaviour.

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