Fix reference counting in method_get
Fix reference counting in method_get

We weren't applying proper reference counting in method_get - which
somehow caused a crash when an exception was raised.

ericsnowcurrently/qur-gopy,qur/gopy,limetext/gopy,limetext/gopy,qur/gopy,ericsnowcurrently/qur-gopy,ericsnowcurrently/qur-gopy,qur/gopy,limetext/gopy