Prevent uncrustify "error" checks from trigger travis errors.
Prevent uncrustify "error" checks from trigger travis errors.

There are multiple different versions of uncrustify, and they
do not always generate the same output.  (Arguably this is due to
defects in uncrustify.)  So for now we punt and don't throw an error,
but we do still generate the output.  Pay attention to this going forward.

nanomsg/nng,nanomsg/nng,nanomsg/nng,nanomsg/nng