Fix crash on reaction matching

main.js

@@ -112,7 +112,7 @@ const commands = {
     },
     "remove reaction to": (msg, s) => {
         if (!isAuthorised(msg.member)) return;
-        let content = s.substring("remove reaction to ".length).trim();
+        let content = s.substring("remove reaction to ".length).trim().toLowerCase();
         if(!db.get("messageReactions").has(content).value()) {
             msg.channel.send(`${msg.author.toString()} No such reaction available!`);
             return;
@@ -146,8 +146,9 @@ client.on("message", m => {
     if (m.author.id == client.user.id) return;
 
     let content = m.cleanContent.trim();
-    if(db.get("messageReactions").has(content.toLowerCase()).value()) {
-        m.react(client.emojis.get(db.get("messageReactions").get(content).value()));
+    let lowerContent = content.toLowerCase();
+    if(db.get("messageReactions").has(lowerContent).value()) {
+        m.react(client.emojis.get(db.get("messageReactions").get(lowerContent).value()));
         return;
     }