[systemsettings] Fix building on gcc 4.9. Fixes JB#44875

Tomin1 · Tomin1 · commit a671bb134b57 · 2019-02-21T11:45:55.000+02:00
Add missing header that is needed on gcc 4.9.
diff --git a/src/certificatemodel.cpp b/src/certificatemodel.cpp
@@ -35,6 +35,7 @@
 #include <QFile>
 #include <QRegularExpression>
 #include <QDebug>
+#include <functional>
 
 #include <openssl/opensslv.h>
 #include <openssl/bio.h>
diff --git a/src/udisks2block_p.h b/src/udisks2block_p.h
@@ -36,6 +36,7 @@
 #include <QVariantMap>
 #include <QDBusConnection>
 #include <QPointer>
+#include <functional>
 
 #include "udisks2defines.h"
 
diff --git a/src/udisks2blockdevices_p.h b/src/udisks2blockdevices_p.h
@@ -34,6 +34,7 @@
 
 #include <QMap>
 #include <QPointer>
+#include <functional>
 
 #include "udisks2block_p.h"
 
