Fix bitflag math
Fix bitflag math

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