Adjust locale fallback

This fixes #1701

renderer/src/modules/localemanager.js

@@ -11,7 +11,6 @@ export default new class LocaleManager {
     get defaultLocale() {return "en-US";}
 
     constructor() {
-        this.locale = "";
         this.strings = Utilities.extend({}, Locales[this.defaultLocale]);
     }
 
@@ -21,16 +20,13 @@ export default new class LocaleManager {
     }
 
     setLocale() {
-        let newStrings;
-        if (this.discordLocale != this.defaultLocale) {
-            newStrings = Locales[this.discordLocale];
-            if (!newStrings) return this.setLocale(this.defaultLocale);
-        }
-        else {
-            newStrings = Locales[this.defaultLocale];
-        }
-        this.locale = this.discordLocale;
-        Utilities.extendTruthy(this.strings, newStrings);
+        // Reset to the default locale in case a language is incomplete
+        Utilities.extend(this.strings, Locales[this.defaultLocale]);
+
+        // Get the strings of the new language and extend if a translation exists
+        const newStrings = Locales[this.discordLocale];
+        if (newStrings) Utilities.extendTruthy(this.strings, newStrings);
+
         Events.emit("strings-updated");
     }
 };