Fix PostgreSQL size bug for uppercase (#2631)
Fix PostgreSQL size bug for uppercase (#2631)

Crash for users with uppercase letters
marienfressinaud/FreshRSS,romibi/FreshRSS,marienfressinaud/FreshRSS,FreshRSS/FreshRSS,Alkarex/FreshRSS,romibi/FreshRSS,aledeg/FreshRSS,Alkarex/FreshRSS,aledeg/FreshRSS,FreshRSS/FreshRSS,aledeg/FreshRSS,Alkarex/FreshRSS,Alkarex/FreshRSS,romibi/FreshRSS,romibi/FreshRSS,FreshRSS/FreshRSS,FreshRSS/FreshRSS,aledeg/FreshRSS,marienfressinaud/FreshRSS,marienfressinaud/FreshRSS