fix: short-circuit fetch user route if self

src/routes/users/fetch_user.rs

@@ -8,6 +8,10 @@ use rocket::{serde::json::Json, State};
 #[openapi(tag = "User Information")]
 #[get("/<target>")]
 pub async fn req(db: &State<Database>, user: User, target: Ref) -> Result<Json<User>> {
+    if target.id == user.id {
+        return Ok(Json(user));
+    }
+
     let target = target.as_user(db).await?;
 
     let permissions = perms(&user).user(&target).calc_user(db).await;

src/routes/users/find_mutual.rs

@@ -20,12 +20,12 @@ pub struct MutualResponse {
 #[openapi(tag = "Relationships")]
 #[get("/<target>/mutual")]
 pub async fn req(db: &State<Database>, user: User, target: Ref) -> Result<Json<MutualResponse>> {
-    let target = target.as_user(db).await?;
-
     if target.id == user.id {
         return Err(Error::InvalidOperation);
     }
 
+    let target = target.as_user(db).await?;
+
     if perms(&user)
         .user(&target)
         .calc_user(db)