Simplify code for cookie dir
Simplify code for cookie dir

See https://github.com/FreshRSS/FreshRSS/issues/700
See https://github.com/FreshRSS/FreshRSS/commit/eec95ffb6a414f00f0ddd6cb1f81ac7ee55d4f6b

FreshRSS/FreshRSS,romibi/FreshRSS,marienfressinaud/FreshRSS,romibi/FreshRSS,samuelstein/FreshRSS,superboum/FreshRSS,Alkarex/FreshRSS,Alkarex/FreshRSS,aledeg/FreshRSS,aledeg/FreshRSS,Alkarex/FreshRSS,Alkarex/FreshRSS,romibi/FreshRSS,marienfressinaud/FreshRSS,Dolomich/FreshRSS,FreshRSS/FreshRSS,Dolomich/FreshRSS,asmundg/FreshRSS,asmundg/FreshRSS,Dolomich/FreshRSS,FreshRSS/FreshRSS,romibi/FreshRSS,marienfressinaud/FreshRSS,aledeg/FreshRSS,samuelstein/FreshRSS,FreshRSS/FreshRSS,samuelstein/FreshRSS,asmundg/FreshRSS,marienfressinaud/FreshRSS,aledeg/FreshRSS,superboum/FreshRSS,superboum/FreshRSS