Minor fixes to JSONPLoader. Missing callback cleanup, and RTE on error
Minor fixes to JSONPLoader. Missing callback cleanup, and RTE on error

cnbin/PreloadJS,sokeroner/PreloadJS,CreateJS/PreloadJS,cnbin/PreloadJS,andrew168/PreloadJS,tehvgg/PreloadJS,sokeroner/PreloadJS,CreateJS/PreloadJS,SpringRoll/PreloadJS,tehvgg/PreloadJS,dmnsgn/PreloadJS,not-only-code/PreloadJS,ebabel-eu/PreloadJS,Teino1978-Corp/Teino1978-Corp-PreloadJS,SpringRoll/PreloadJS,Teino1978-Corp/Teino1978-Corp-PreloadJS,andrew168/PreloadJS