Security Fix: Export and import command

Fixed that the export and import command of MSync could be executed on clientside, this was not the intended behaviour, these commands were only intended for server side usage

Author: ApertureDevelopment

lua/msync/server/modules/sv_mbsync.lua

@@ -639,6 +639,7 @@ MSync.modules[info.ModuleIdentifier].init = function( transaction )
         exportActiveBans:start()
     end
     concommand.Add("msync."..info.ModuleIdentifier..".export", function( ply, cmd, args )
+        if ply:IsValid() then return end
         MSync.modules[info.ModuleIdentifier].exportBansToULX()
     end)
 
@@ -715,6 +716,7 @@ MSync.modules[info.ModuleIdentifier].init = function( transaction )
         banTransaction:start()
     end
     concommand.Add("msync."..info.ModuleIdentifier..".import", function( ply, cmd, args )
+        if ply:IsValid() then return end
         local allservers = false
 
         if args[1] == "true" then