Add Return argument is C function does not return void
Add Return argument is C function does not return void

MSeifert04/astropy,MSeifert04/astropy,joergdietrich/astropy,kelle/astropy,lpsinger/astropy,lpsinger/astropy,bsipocz/astropy,larrybradley/astropy,mhvk/astropy,funbaker/astropy,AustereCuriosity/astropy,mhvk/astropy,astropy/astropy,funbaker/astropy,kelle/astropy,kelle/astropy,DougBurke/astropy,tbabej/astropy,StuartLittlefair/astropy,tbabej/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,AustereCuriosity/astropy,kelle/astropy,funbaker/astropy,DougBurke/astropy,lpsinger/astropy,lpsinger/astropy,saimn/astropy,saimn/astropy,DougBurke/astropy,saimn/astropy,StuartLittlefair/astropy,joergdietrich/astropy,joergdietrich/astropy,larrybradley/astropy,DougBurke/astropy,tbabej/astropy,mhvk/astropy,StuartLittlefair/astropy,saimn/astropy,astropy/astropy,MSeifert04/astropy,mhvk/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,astropy/astropy,tbabej/astropy,MSeifert04/astropy,mhvk/astropy,StuartLittlefair/astropy,saimn/astropy,stargaser/astropy,AustereCuriosity/astropy,dhomeier/astropy,pllim/astropy,astropy/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,joergdietrich/astropy,pllim/astropy,StuartLittlefair/astropy,kelle/astropy,bsipocz/astropy,pllim/astropy,tbabej/astropy,AustereCuriosity/astropy,stargaser/astropy,pllim/astropy,stargaser/astropy,joergdietrich/astropy,larrybradley/astropy,lpsinger/astropy,astropy/astropy,aleksandr-bakanov/astropy,AustereCuriosity/astropy,dhomeier/astropy,dhomeier/astropy,dhomeier/astropy,stargaser/astropy,pllim/astropy,funbaker/astropy,bsipocz/astropy