fix: collapse nested if statements to resolve clippy warnings

Author: tnsc

src/graphql/email.rs

@@ -102,27 +102,25 @@ impl EmailQuery {
 
             let cached: Option<String> = conn.get(&cache_key).ok();
 
-            if let Some(cached_str) = cached {
-                if let Ok(cached_response) =
+            if let Some(cached_str) = cached
+                && let Ok(cached_response) =
                     serde_json::from_str::<CachedValidationResponse>(&cached_str)
-                {
-                    return Some(cached_response.into());
-                }
+            {
+                return Some(cached_response.into());
             }
         }
         None
     }
 
     async fn cache_result(&self, email: &str, result: &EmailValidationResponse) {
-        if let Some(client) = &self.redis_client {
-            if let Ok(mut conn) = client.get_connection() {
-                let cache_key = format!("email:validation:{}", email);
-                let cached_response: CachedValidationResponse = (*result).clone().into();
+        if let Some(client) = &self.redis_client
+            && let Ok(mut conn) = client.get_connection() {
+            let cache_key = format!("email:validation:{}", email);
+            let cached_response: CachedValidationResponse = (*result).clone().into();
 
-                if let Ok(json) = serde_json::to_string(&cached_response) {
-                    let _: Result<(), RedisError> =
-                        conn.set_ex(&cache_key, json, self.cache_ttl as usize);
-                }
+            if let Ok(json) = serde_json::to_string(&cached_response) {
+                let _: Result<(), RedisError> =
+                    conn.set_ex(&cache_key, json, self.cache_ttl as usize);
             }
         }
     }