fixed oversight where users could set DM reminders across servers

Cargo.lock

@@ -1285,7 +1285,7 @@ dependencies = [
 
 [[package]]
 name = "reminder_rs"
-version = "1.5.0-1"
+version = "1.5.1"
 dependencies = [
  "Inflector",
  "chrono",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "reminder_rs"
-version = "1.5.0-1"
+version = "1.5.1"
 authors = ["jellywx <judesouthworth@pm.me>"]
 edition = "2018"
 

src/commands/reminder_cmds.rs

@@ -1593,11 +1593,19 @@ async fn create_reminder<'a, U: Into<u64>, T: TryInto<i64>>(
 
     let db_channel_id = match scope_id {
         ReminderScope::User(user_id) => {
-            let user = UserId(*user_id).to_user(&ctx).await.unwrap();
-
+            if let Ok(user) = UserId(*user_id).to_user(&ctx).await {
                 let user_data = UserData::from_user(&user, &ctx, &pool).await.unwrap();
 
+                if let Some(guild_id) = guild_id {
+                    if guild_id.member(ctx, user).await.is_err() {
+                        return Err(ReminderError::InvalidTag);
+                    }
+                }
+
                 user_data.dm_channel
+            } else {
+                return Err(ReminderError::InvalidTag);
+            }
         }
 
         ReminderScope::Channel(channel_id) => {