BUG: Let VAR results complete when model has perfect fit
BUG: Let VAR results complete when model has perfect fit

closes #7157

josef-pkt/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,bashtage/statsmodels,statsmodels/statsmodels,bashtage/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,josef-pkt/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,bashtage/statsmodels,bashtage/statsmodels,statsmodels/statsmodels,bashtage/statsmodels,bashtage/statsmodels