clean up warnings

src/widgets/dialogs/EmotePopup.hpp

@@ -6,7 +6,7 @@
 
 namespace chatterino {
 
-class Link;
+struct Link;
 class ChannelView;
 class Channel;
 using ChannelPtr = std::shared_ptr<Channel>;

src/widgets/settingspages/HighlightingPage.cpp

@@ -139,7 +139,7 @@ HighlightingPage::HighlightingPage()
             auto selectFile =
                 customSound.emplace<QPushButton>("Select custom sound file");
             QObject::connect(selectFile.getElement(), &QPushButton::clicked,
-                             this, [this, app] {
+                             this, [this] {
                                  auto fileName = QFileDialog::getOpenFileName(
                                      this, tr("Open Sound"), "",
                                      tr("Audio Files (*.mp3 *.wav)"));

src/widgets/settingspages/ModerationPage.cpp

@@ -90,7 +90,7 @@ ModerationPage::ModerationPage()
 
         // Logs (copied from LoggingMananger)
         getSettings()->logPath.connect(
-            [app, logsPathLabel](const QString &logPath, auto) mutable {
+            [logsPathLabel](const QString &logPath, auto) mutable {
                 QString pathOriginal;
 
                 if (logPath == "") {