quick linux fix

src/widgets/window.cpp

@@ -32,6 +32,10 @@ Window::Window(WindowType _type)
     auto app = getApp();
 
     app->accounts->Twitch.currentUserChanged.connect([this] {
+        if (this->userLabel == nullptr) {
+            return;
+        }
+
         auto user = getApp()->accounts->Twitch.getCurrent();
 
         if (user->isAnon()) {

src/widgets/window.hpp

@@ -42,7 +42,7 @@ protected:
     bool event(QEvent *event) override;
 
 private:
-    RippleEffectLabel *userLabel;
+    RippleEffectLabel *userLabel = nullptr;
 
     WindowType type;
     float dpi;