Do not keep nickserv passwords lingering around as module arguments.

Instead, save them as NV. This also prevents them from showing up in
webadmin.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1914 726aef4b-f618-498e-8847-2d620e286838

modules/nickserv.cpp

@@ -23,8 +23,11 @@ public:
 	{
 		if (sArgs.empty())
 			m_sPass = GetNV("Password");
-		else
+		else {
 			m_sPass = sArgs;
+			SetNV("Password", m_sPass);
+			SetArgs("");
+		}
 
 		return true;
 	}