Correct parameter name, which also skips some compiler shadowing warings.
Correct parameter name, which also skips some compiler shadowing warings.

* subversion/include/svn_wc.h:
  (svn_wc_revert4): the param name should be WC_CTX.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@879580 13f79535-47bb-0310-9956-ffa450edef68

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