Simplify the upgrade function, by just doing an early out if we can't do the upgrade.
Simplify the upgrade function, by just doing an early out if we can't
do the upgrade.

* subversion/libsvn_wc/lock.c
  (svn_wc__upgrade_format): Reverse a conditional to take an early out.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@877226 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion