Fix unit conversion in fitter when input_units is still defined on a model without units
Fix unit conversion in fitter when input_units is still defined on a model without units
larrybradley/astropy,larrybradley/astropy,mhvk/astropy,bsipocz/astropy,astropy/astropy,DougBurke/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,bsipocz/astropy,astropy/astropy,MSeifert04/astropy,funbaker/astropy,mhvk/astropy,saimn/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,kelle/astropy,kelle/astropy,dhomeier/astropy,StuartLittlefair/astropy,DougBurke/astropy,pllim/astropy,lpsinger/astropy,stargaser/astropy,dhomeier/astropy,saimn/astropy,larrybradley/astropy,funbaker/astropy,AustereCuriosity/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,AustereCuriosity/astropy,MSeifert04/astropy,StuartLittlefair/astropy,bsipocz/astropy,mhvk/astropy,DougBurke/astropy,lpsinger/astropy,bsipocz/astropy,pllim/astropy,dhomeier/astropy,lpsinger/astropy,saimn/astropy,AustereCuriosity/astropy,larrybradley/astropy,MSeifert04/astropy,MSeifert04/astropy,pllim/astropy,pllim/astropy,StuartLittlefair/astropy,mhvk/astropy,AustereCuriosity/astropy,DougBurke/astropy,StuartLittlefair/astropy,lpsinger/astropy,pllim/astropy,stargaser/astropy,saimn/astropy,kelle/astropy,stargaser/astropy,funbaker/astropy,kelle/astropy,funbaker/astropy,AustereCuriosity/astropy,saimn/astropy,astropy/astropy,mhvk/astropy,lpsinger/astropy,kelle/astropy,stargaser/astropy,dhomeier/astropy,astropy/astropy,astropy/astropy