PATCHING GOAUTODIAL 2.1

i just upgraded my goautodial 2.0 CE to 2.1 ....
and i encounter this issue : http://goautodial.org/issues/27
temporarily i use http://IP_ADDRESS/agc/vicidial.php .. to make calls
can someone guide me how and where im gonna do the patching .. so that i could fully use the new features of Goautodial 2.1

and i encounter this issue : http://goautodial.org/issues/27
temporarily i use http://IP_ADDRESS/agc/vicidial.php .. to make calls
can someone guide me how and where im gonna do the patching .. so that i could fully use the new features of Goautodial 2.1
