Add missing include for assert

src/core/database.cpp

@@ -20,6 +20,7 @@
 
 #include "config.h"
 
+#include <assert.h>
 #include <sqlite3.h>
 #include <boost/scope_exit.hpp>
 

src/core/tagreaderclient.cpp

@@ -21,6 +21,7 @@
 #include "config.h"
 
 #include <string>
+#include <assert.h>
 
 #include <QtGlobal>
 #include <QObject>

src/device/filesystemdevice.cpp

@@ -20,6 +20,8 @@
 
 #include "config.h"
 
+#include <assert.h>
+
 #include <QThread>
 #include <QVariant>
 #include <QString>