- m_challenge.c:m_challenge(): added sanity test on parv[1]


git-svn-id: svn://svn.ircd-hybrid.org/svnroot/ircd-hybrid/branches/8.2.x@4282 82007160-df01-0410-b94d-b575c5fd34c7
- m_oper.c, m_challenge.c: cosmetical fixes


git-svn-id: svn://svn.ircd-hybrid.org/svnroot/ircd-hybrid/branches/8.2.x@4285 82007160-df01-0410-b94d-b575c5fd34c7