log: return instead of invalid read
log: return instead of invalid read

Change-Id: I49af5c1d3ea494c895d5fea5849490efa308b144
Reviewed-on: http://gerrit.aldebaran.lan/35858
Reviewed-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>
Tested-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,bsautron/libqi,vbarbaresi/libqi,aldebaran/libqi