binarycoder : Fix segfault when type is unknown.
binarycoder : Fix segfault when type is unknown.

Change-Id: I185cb5eed6fcf78a411a80d7ad5c2acc033a5e3c
Reviewed-on: http://gerrit.aldebaran.lan:8080/14632
Reviewed-by: proullon <ffff9135679d397f48dd743107119b1f6fc32d3d@aldebaran-robotics.com>
Tested-by: proullon <ffff9135679d397f48dd743107119b1f6fc32d3d@aldebaran-robotics.com>

aldebaran/libqi,bsautron/libqi,vbarbaresi/libqi,aldebaran/libqi,aldebaran/libqi-java,aldebaran/libqi-java,aldebaran/libqi,aldebaran/libqi-java