- m_xline.c: speed up xline lookups


git-svn-id: svn://svn.ircd-hybrid.org/svnroot/ircd-hybrid/branches/8.1.x@2878 82007160-df01-0410-b94d-b575c5fd34c7
- m_xline.c:mo_xline(): properly report missing privilege now that
  we have the 'unxline' oper flag


git-svn-id: svn://svn.ircd-hybrid.org/svnroot/ircd-hybrid/branches/8.1.x@2880 82007160-df01-0410-b94d-b575c5fd34c7