Fix cargo clippy issues

geneit_backend/src/services/members_service.rs

@@ -149,11 +149,10 @@ pub mod loop_detection {
 
     impl LoopStack<'_> {
         pub fn contains(&self, id: MemberID) -> bool {
-            if let Some(ls) = &self.prev {
-                if ls.contains(id) {
+            if let Some(ls) = &self.prev
+                && ls.contains(id) {
                     return true;
                 }
-            }
 
             self.curr == id
         }

geneit_backend/src/services/openid_service.rs

@@ -64,7 +64,7 @@ fn redis_key(state: &str) -> String {
     format!("oidc-state-{state}")
 }
 
-async fn load_provider_info(prov_id: &str) -> anyhow::Result<OpenIDClient> {
+async fn load_provider_info(prov_id: &str) -> anyhow::Result<OpenIDClient<'_>> {
     let prov = AppConfig::get()
         .openid_providers()
         .into_iter()