lint: warn on basic auth and non-handled err in gridfs avatar

backend/app/rest/auth/auth.go

@@ -58,7 +58,7 @@ func (a *Authenticator) Auth(reqAuth bool) func(http.Handler) http.Handler {
 			}
 
 			// use dev user basic auth if enabled
-			if a.basicDevUser(w, r) {
+			if a.basicDevUser(r) {
 				r = rest.SetUserInfo(r, devUser)
 				h.ServeHTTP(w, r)
 				return
@@ -166,7 +166,7 @@ func (a *Authenticator) AdminOnly(next http.Handler) http.Handler {
 	return http.HandlerFunc(fn)
 }
 
-func (a *Authenticator) basicDevUser(w http.ResponseWriter, r *http.Request) bool {
+func (a *Authenticator) basicDevUser(r *http.Request) bool {
 
 	if a.DevPasswd == "" {
 		return false

backend/app/store/avatar/gridfs.go

@@ -89,7 +89,9 @@ func (gf *GridFS) Remove(avatar string) error {
 		if e != nil {
 			return errors.Wrapf(e, "can't get avatar %s", avatar)
 		}
-		_ = fh.Close()
+		if e = fh.Close(); e != nil {
+			log.Printf("[WARN] can't close avatar %s, %s", avatar, e)
+		}
 		return dbase.GridFS("fs").Remove(avatar)
 	})
 }