Solved a bug when generating a constant velocity spline: some of the...

Solved a bug when generating a constant velocity spline: some of the parameters where not computed properly.

src/vel_spline.cpp

@@ -181,7 +181,10 @@ bool CVelSpline::generate_max_length(double &max_len)
   if(fabs(this->start_acc-this->end_acc)<0.001)
   {
     if(fabs(this->end_vel-this->start_vel)<0.001)
+    {
       this->generate_constant_vel(this->start_vel,max_len);
+      return true;
+    }
     else
     {
       this->time=(2.0*max_len)/(this->end_vel+this->start_vel);