[numerics] fix some FC3D test assertion failures (debug mode) : localproblem->mu is allocated before the assert.
[numerics] fix some FC3D test assertion failures (debug mode) : localproblem->mu is allocated before the assert.

bremond/siconos,bremond/siconos,siconos/siconos-deb,bremond/siconos,radarsat1/siconos,radarsat1/siconos,fperignon/siconos,fperignon/siconos,siconos/siconos-deb,fperignon/siconos,fperignon/siconos,radarsat1/siconos,siconos/siconos,siconos/siconos,bremond/siconos,siconos/siconos-deb,siconos/siconos-deb,siconos/siconos-deb,siconos/siconos,fperignon/siconos,bremond/siconos,radarsat1/siconos,radarsat1/siconos,siconos/siconos-deb,siconos/siconos