Memory in streaming

[FedericoBarone994]

Hi, i encountered a problem with this library when trying to stream a video and register with depth map. I'm using ubuntu 16.04, python 3.5, with the last release of libfreenect2. The problem is that when i'm using the function "device.registraton.apply()", the program keep increase the memory usage until i close it.

[PieroV]

Hi, I've fixed the issue and sent a pull request.
Feel free to check it out in the meantime 😄