Revert "Improve Decode against timing attacks"
Revert "Improve Decode against timing attacks"

This reverts commit 1be1b717b743c89f2393561985403b51bc192255.

s7v7nislands/securecookie,Gorilla/securecookie,elithrar/securecookie,abduelhamit/securecookie,gorilla/securecookie,jmptrader/securecookie