Oops, fix some crashes on startup

src/ui/settingsdialog.h

@@ -19,6 +19,7 @@
 
 #include <QDialog>
 
+#include "config.h"
 #include "ui_settingsdialog.h"
 
 class LibraryDirectoryModel;

src/widgets/equalizerslider.cpp

@@ -18,7 +18,8 @@
 #include "ui_equalizerslider.h"
 
 EqualizerSlider::EqualizerSlider(const QString& label, QWidget *parent)
-  : QWidget(parent)
+  : QWidget(parent),
+    ui_(new Ui_EqualizerSlider)
 {
   ui_->setupUi(this);
   ui_->label->setText(label);