Fix correct scope for mutex
Fix correct scope for mutex

Change-Id: Idefd25cb430e976772d0e412ee271111b59be15a
Reviewed-on: http://gerrit.aldebaran.lan:8080/208
Reviewed-by: Cedric GESTES <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>
Tested-by: Cedric GESTES <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>

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