Issue Description

Minor compilation error with -Wall (which we're required to use here), patch attached here:
compilation_error_fix_richardroberts.patch.txt

By the way, I'd be glad to submit these minor fixes as pull requests if that makes things easier! Is there a permission change that I need to be able to push to a new branch? Currently I get this error:
ERROR: Permission to IntelRealSense/librealsense.git denied to richardroberts. fatal: Could not read from remote repository.