Fix for seg fault when calling get_value on a MIP variable that did not need to be added to the model.
Fix for seg fault when calling get_value on a MIP variable that did not need to be added to the model.

The variable may not be passed to the solver if it is not involved in a non-trivial constraint. get_value() will return the variable's lower bound as the value in this case.

eomahony/Numberjack,eomahony/Numberjack,JElchison/Numberjack,JElchison/Numberjack,JElchison/Numberjack,JElchison/Numberjack,JElchison/Numberjack,eomahony/Numberjack,eomahony/Numberjack,eomahony/Numberjack