Fix SQLite CONCAT used for search (#2777)
Fix SQLite CONCAT used for search (#2777)

Used e.g. for searches `inurl:xxx`

Co-authored-by: Marien Fressinaud <34c6fceca75e456f25e7e99531e2425c6c1de443@marienfressinaud.fr>

marienfressinaud/FreshRSS,FreshRSS/FreshRSS,marienfressinaud/FreshRSS,aledeg/FreshRSS,FreshRSS/FreshRSS,aledeg/FreshRSS,Alkarex/FreshRSS,aledeg/FreshRSS,Alkarex/FreshRSS,FreshRSS/FreshRSS,romibi/FreshRSS,Alkarex/FreshRSS,romibi/FreshRSS,marienfressinaud/FreshRSS,FreshRSS/FreshRSS,aledeg/FreshRSS,romibi/FreshRSS,Alkarex/FreshRSS,romibi/FreshRSS,marienfressinaud/FreshRSS